Prelims GS Paper I 2013

Answer: (b) 2 only

Only statement 2 is accepted: figurines taken as mother goddesses and the seal showing a male horned figure point to both female and male deities. No clear palaces or temples have been identified, and there is no evidence of horse-drawn chariots in the Harappan phase.

• ✗ 1. A large building at Mohenjodaro was labelled a palace, but no spectacular finds were associated with it; no certain temples or palaces are known.
• ✓ 2. Female terracotta figurines were regarded as mother goddesses, and the seal of a male figure (proto-Shiva, Pashupati) suggests a male deity.
• ✗ 3. The horse is not securely attested at mature Harappan sites, and chariot warfare belongs to the later Vedic world.

Remember · Harappans: no definite palaces or temples, no horse-drawn chariots; mother goddess figurines and a male deity seal suggest both male and female worship.

📘 Read it in NCERT: Class 12 Themes in Indian History, Part I, Ch 1 (practise this chapter) · Class 12 Themes in Indian History, Part I, Ch 1 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 24 Oct 2026 (how we verify). Permalink · Report an error

Answer: (b) 2 and 3 only

Xuanzang (Hsuan-tsang, 7th century, Harsha's reign) described ordeals by fire, water and poison and the tolls on ferries and barrier stations. But he himself was robbed on the road, so he did not call the routes completely safe.

• ✗ 1. Xuanzang records that travel was not wholly safe; he himself was attacked by robbers.
• ✓ 2. He lists four ordeals (water, fire, weighing, poison) used to test guilt.
• ✓ 3. He mentions that merchants paid small duties at river ferries and barrier stations.

Remember · Xuanzang (7th century, Harsha): ordeals for guilt, tolls on traders, and roads that were not wholly safe.

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Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 24 Oct 2026 (how we verify). Permalink · Report an error

Answer: (b) 2 only

The Lodi dynasty fell at Panipat in 1526. Guru Nanak (1469-1539) was alive and preaching then. Dadu Dayal (born 1544) and Tyagaraja (born 1767) lived much later.

• ✗ 1. Dadu Dayal was born in 1544, after Babur's victory of 1526 and nearly two decades after Babur's death in 1530.
• ✓ 2. Baba Guru Nanak lived from 1469 to 1539, so he was in his late fifties and active in 1526.
• ✗ 3. Tyagaraja (1767-1847) was a Carnatic composer of the late 18th and early 19th centuries.

Remember · 1526: Babur defeats Ibrahim Lodi. Guru Nanak (1469-1539) was a contemporary; Dadu (16th-century) and Tyagaraja (c. 1800) came later.

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Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 24 Oct 2026 (how we verify). Permalink · Report an error

Answer: (a) the reduction of the share of the landlords from one-half of the crop to one third.

The Tebhaga movement (1946–47) was a struggle by sharecroppers (bargadars) in Bengal. They wanted to keep two-thirds of the crop instead of the customary half, so the landlord's share would fall from one-half to one-third. It was a demand about crop-sharing. It did not ask for land ownership, abolition of zamindari or cancellation of debts.

• ✓ (a) Tebhaga means 'three shares'. Sharecroppers demanded two-thirds of the produce for themselves, which cut the landowner's share from one-half to one-third.
• ✗ (b) The movement did not demand ownership of land for the tillers. It asked for a better share of the crop on land they already cultivated as sharecroppers.
• ✗ (c) Ending the zamindari system and serfdom was not the Tebhaga demand. It was a limited demand about the crop share.
• ✗ (d) Cancellation of all peasant debts was not the defining demand. The movement was about the sharecropper's share of the crop.

Remember · Tebhaga (1946–47, Bengal, Kisan Sabha/Communist-backed): sharecroppers demanded two-thirds of the crop instead of one-half. Do not confuse it with the Telangana movement (1946–51).

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Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (c) There was no Indian member in the Simon Commission

The Simon Commission was appointed to review the working of the constitutional system set up by the Act of 1919. All its members were British; it did not have a single Indian member. Indians saw this as an insult to their right to shape their own constitution. When it arrived in 1928, the Congress and many other groups greeted it with the slogan 'Go back Simon'.

• ✗ (a) Indians did not object to a review as such; the Act of 1919 itself provided for a review after ten years. What they objected to was that the reviewing body had no Indian member.
• ✗ (b) The protests began when the Commission arrived in 1928, long before its report appeared in 1930. The agitation could not have been a reaction to its recommendations on dyarchy.
• ✓ (c) The Commission was all-White, with no Indian member. This exclusion triggered an all-India boycott, joined by the Congress and a section of the Muslim League.
• ✗ (d) The Commission made no proposal to partition the country, and partition played no part in the 1928 protests.

Remember · The Simon Commission was appointed in 1927 and arrived in 1928. It was all-British, with no Indian member. Hence the all-India boycott and the 'Go back Simon' slogan.

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Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (b) Cripps Proposals

The Quit India Movement began in August 1942. It followed the failure of the Cripps Mission, whose proposals of March 1942 offered post-war dominion status and were rejected by Indian leaders. The Cabinet Mission, the Wavell Plan and the Simon Commission Report belong to other dates.

• ✗ (a) The Cabinet Mission Plan came in 1946, about four years after Quit India (August 1942), so it cannot have caused it.
• ✓ (b) The Cripps Mission came to India in March 1942 and offered post-war dominion status. Indian leaders rejected it. After this failure, Gandhiji launched the Quit India campaign in August 1942.
• ✗ (c) The Simon Commission (1927–30) belongs to the late 1920s. It led to protests and was followed by the Civil Disobedience Movement, not Quit India.
• ✗ (d) The Wavell Plan, which led to the Simla Conference, came in 1945. That is after the 1942 movement.

Remember · The Cripps Mission (March 1942) failed, and Quit India followed in August 1942. The Wavell Plan (1945) and the Cabinet Mission (1946) both came after Quit India.

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Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (c) elected by the Provincial Legislative Assemblies

The provincial members of the Constituent Assembly were chosen by indirect election. The voters were the members of the Provincial Legislative Assemblies set up under the Government of India Act, 1935. The people did not choose them directly, and neither the parties nor the government nominated them.

• ✗ (a) The people did not vote directly. The election was indirect, through the members of the provincial legislatures.
• ✗ (b) The Congress and the Muslim League did not nominate the members. Both parties won most seats because of their strength in the provincial assemblies, but the members were elected.
• ✓ (c) Members from the Provinces were elected by the members of the Provincial Legislative Assemblies, the bodies established under the Government of India Act, 1935.
• ✗ (d) The Government did not pick the provincial members for their constitutional expertise. They were elected by the provincial legislatures.

Remember · The Constituent Assembly first met on 9 December 1946. Its provincial members were indirectly elected by the Provincial Legislative Assemblies of the 1935 Act, not by universal adult franchise.

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Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (c) Removal of disqualifications imposed on the Indian magistrates

The Ilbert Bill (1883), introduced under Lord Ripon, proposed that Indian judges and magistrates be allowed to try British or European persons. This sought to remove a disqualification on Indian magistrates and to bring equality between British and Indian judges. Fierce European opposition forced the government to dilute the measure before it passed.

• ✗ (a) Restrictions on Indians carrying arms came from the Arms Act of 1878. The Ilbert Bill had nothing to do with arms.
• ✗ (b) Restrictions on Indian-language newspapers came from the Vernacular Press Act of 1878. The Ilbert Bill concerned the trial of Europeans, not the press.
• ✓ (c) The bill provided for the trial of British or European persons by Indians and sought equality between British and Indian judges. It aimed to remove the disqualification that barred Indian magistrates from trying Europeans.
• ✗ (d) Duties on imported cotton cloth were a tariff and trade issue. They had no connection with this bill.

Remember · Ilbert Bill (1883): Indian judges were to try Europeans. European protest forced a diluted compromise, which exposed the racial attitudes of British rule.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (c) 1 and 3 only

Annie Besant launched her Home Rule League in 1916 and presided over the Congress session at Calcutta in 1917, so statements 1 and 3 are correct. She did not found the Theosophical Society. Helena Blavatsky and Henry Steel Olcott founded it in 1875; Besant joined in 1889 and led it later.

• ✓ 1. Besant, together with Tilak, launched the Home Rule Movement in 1916. Tilak started his League in April 1916, and Besant's All India Home Rule League followed in September 1916.
• ✗ 2. The Theosophical Society was founded in New York City in 1875 by Helena Blavatsky and Henry Steel Olcott. Besant joined it only in 1889 and later became its President, so she was not its founder.
• ✓ 3. She was President of the Indian National Congress at the Calcutta session of 1917. She was the first woman to hold the post.
• ✗ (d) This option includes statement 2, which is wrong. Leading the Society is not the same as founding it.
• ✗ (b) This option wrongly accepts statement 2 and drops statement 1, which is correct.

Remember · Theosophical Society: founded 1875 by Blavatsky and Olcott. Besant was its President (from 1907), started the Home Rule League (1916) and was Congress President (1917).

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Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (c) 3 only

Statements 1 and 2 are wrong, so only the missing statement 3 can hold, as option c says. The Badami caves (Chalukya, 6th century CE) are far later than the Mauryan Barabar caves, and the Barabar caves were made for the Ajivikas under Ashoka, not Chandragupta Maurya.

• ✗ 1. The Barabar caves (third century BCE) are far older than the Chalukyan Badami caves (6th century CE).
• ✗ 2. The Barabar caves were cut for Ajivikas on the orders of Ashoka, not Chandragupta Maurya.
• ✓ 3. Ellora has Buddhist, Brahmanical and Jain caves.

Remember · Barabar caves: Mauryan (Ashoka, and Dasharatha), for Ajivikas, 3rd century BCE. Badami caves: Chalukyan, 6th century CE.

📘 Read it in NCERT: Class 12 Themes in Indian History, Part I, Ch 4 (practise this chapter) · Class 11 An Introduction to Indian Art, Part I, Ch 4 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 24 Oct 2026 (how we verify). Permalink · Report an error

Answer: (b) 1 and 2 only

Ajanta's cave walls carry the best-known early Indian murals, and the Shiva temple at Lepakshi has Vijayanagara-period murals. Sanchi Stupa is known for sculpted gateways, not paintings.

• ✓ 1. Ajanta's wall paintings are the most famous in India.
• ✓ 2. The Shiva temple at Lepakshi has fine Vijayanagara paintings on its walls.
• ✗ 3. Sanchi is celebrated for stone sculpture on its torana gateways, not murals.

Remember · Murals: Ajanta (Satavahana/Vakataka), Lepakshi (Vijayanagara). Sanchi = sculpture.

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Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 24 Oct 2026 (how we verify). Permalink · Report an error

Answer: (a) One leg is bent and the body is slightly but oppositely curved

Tribhanga means 'three bends': the body is bent at the neck, waist and knee, with weight on one leg, giving an S-like curve. It is common in Odissi and in sculpture and painting.

• ✓ (a) One leg is bent and the body curves slightly in opposite directions, giving three bends.
• ✗ (b) Combining expression, gesture and make-up describes abhinaya, not a pose.
• ✗ (c) This is a general description of expressive movement.

Remember · Tribhanga = three bends (neck, waist, knee); signature pose of Odissi and of Indian sculpture.

📘 Read it in NCERT: Class 11 An Introduction to Indian Art, Part I, Ch 4 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 24 Oct 2026 (how we verify). Permalink · Report an error

Answer: (b) 2 only

Sankhya, founded by Kapila, is a dualist school of purusha and prakriti. It accepts rebirth (the soul's cycle of births) and teaches that liberation comes from discriminating knowledge of the self, with no creator's grace involved.

• ✗ 1. Sankhya does accept rebirth: the soul remains bound in the cycle of births until it attains discriminating knowledge.
• ✓ 2. Liberation (kaivalya) comes only from the knowledge that purusha is distinct from prakriti, not from an external agent or god.

Remember · Sankhya (Kapila): purusha-prakriti dualism, accepts rebirth, liberation by discriminating self-knowledge.

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Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 24 Oct 2026 (how we verify). Permalink · Report an error

Answer: (b) Chaitya is a place of worship, while Vihara is the dwelling place of the monks

A chaitya is a prayer hall with a stupa, used for congregational worship; a vihara is a monastery with cells where monks lived. Option a reverses the two.

• ✗ (a) This reverses the two terms.
• ✓ (b) A chaitya hall is the place of worship with a stupa; a vihara is the residence of the monks.
• ✗ (c) The stupa is inside the chaitya hall; a vihara is a monastery with cells, not a hall axial to a stupa.
• ✗ (d) The two have different plans and purposes.

Remember · Chaitya = prayer hall with stupa; Vihara = monks' residence with cells. Karle is a chaitya; Nashik (Pandavleni) and Ajanta have viharas.

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Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 24 Oct 2026 (how we verify). Permalink · Report an error

Answer: (a) The extinction of the flame of desire

Nibbana (nirvana) literally means 'blowing out', like a flame going out. In Buddhism it is the extinguishing of desire, ego and hence suffering, not annihilation of the person.

• ✓ (a) Nirvana is the blowing out of the fire of craving, ending rebirth and suffering.
• ✗ (b) Buddhism denies a permanent self, but nirvana is not described as annihilating a being.
• ✗ (c) Bliss and rest describe the result, not the defining concept.

Remember · Nirvana = extinguishing of desire and ego, the end of the cycle of suffering and rebirth.

📘 Read it in NCERT: Class 12 Themes in Indian History, Part I, Ch 4 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 24 Oct 2026 (how we verify). Permalink · Report an error

Answer: (d) 1, 2 and 3

Jainism holds that karma binds the soul and is shed mainly by penance, that souls (jiva) exist even in the smallest particles of matter, and that karma must be ended for the soul to be free. All three statements reflect Jain teaching.

• ✓ 1. Jain teaching holds that asceticism and penance free the soul from karma.
• ✓ 2. Jains hold that souls (jiva) exist even in the smallest particles of earth, water, fire and air.
• ✓ 3. Karma binds the soul to rebirth and must be shed for liberation.

Remember · Jain doctrine: karma binds the soul, penance and ahimsa free it; souls exist even in particles of matter.

📘 Read it in NCERT: Class 12 Themes in Indian History, Part I, Ch 4 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 24 Oct 2026 (how we verify). Permalink · Report an error

Answer: (a) 1 and 2 only

In India's parliamentary system the ministers come from Parliament and stay in office only while they have the Lok Sabha's confidence. The Cabinet is headed by the Prime Minister, who is the head of government. The President, as Head of State, does not head it.

• ✓ 1. Ministers are drawn from Parliament. Article 75(5) lets a non-member be a Minister for only six consecutive months. After that he must become an MP or cease to be a Minister.
• ✓ 2. Article 75(3) makes the Council of Ministers collectively responsible to the Lok Sabha. A ministry that loses the House's confidence has to go.
• ✗ 3. Article 74(1) puts the Prime Minister at the head of the Council of Ministers. The President is only the nominal Head of State and acts on the Council's advice.

Remember · Parliamentary system: the executive sits in the legislature and is collectively responsible to the Lok Sabha. The Prime Minister heads the Cabinet. The President is the nominal head.

📘 Read it in NCERT: Class 11 Indian Constitution at Work, Ch 4 (practise this chapter) · Class 11 Indian Constitution at Work, Ch 4 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (b) the Preamble and the Directive Principles of State Policy

The Preamble promises all citizens 'JUSTICE, social, economic and political'. Article 38, in the Directive Principles of State Policy, tells the State to build a social order in which the same three kinds of justice guide national life. No Fundamental Right is framed as a right to economic justice.

• ✗ (a) The Preamble does contain economic justice. But the Fundamental Rights (Part III) are justiciable individual rights such as equality, freedom and constitutional remedies. They do not set economic justice as an objective.
• ✓ (b) The Preamble lists 'JUSTICE, social, economic and political' among its objectives. Article 38 in Part IV carries the same idea as a directive to the State. Article 39 adds economic aims such as preventing the concentration of wealth to the common detriment.
• ✗ (c) The Directive Principles do carry economic justice. But economic justice is not a Fundamental Right, so this pairing fails.
• ✗ (d) The Preamble and the Directive Principles clearly contain it, so 'None of the above' cannot be right.

Remember · Justice – social, economic and political – is in the Preamble and in Article 38 (DPSP). Economic justice is a directive to the State, not a Fundamental Right.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (c) Directive Principles of State Policy

Article 37 in Part IV of the Constitution says the Directive Principles of State Policy are "fundamental in the governance of the country". It also makes it the State's duty to apply them when making laws. No provision gives this description to Fundamental Rights or Fundamental Duties.

• ✓ (c) Article 37 says the provisions of Part IV cannot be enforced by any court. It still calls the principles laid down there fundamental in the governance of the country, and makes it the State's duty to apply them in making laws.
• ✗ (a) Fundamental Rights (Part III) are enforceable by courts and limit State action. The Constitution does not describe them as 'fundamental in the governance of the country'; that phrase belongs to Article 37.
• ✗ (b) Fundamental Duties are in Article 51A (Part IVA). Article 51A lists citizens' duties and does not call them fundamental in the governance of the country.
• ✗ (d) Neither Fundamental Rights nor Fundamental Duties carries this label, so the combination fails.

Remember · Article 37: DPSPs are not enforceable by courts, yet are fundamental in the governance of the country, and the State must apply them in making laws.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (d) Neither 1 nor 2

Under Article 368, the Bill for a constitutional amendment can be brought first in the Lok Sabha or the Rajya Sabha, so the Lok Sabha is not the only option. Amendments touching the federal features also need ratification by at least half of the State legislatures, not every State. Both statements are wrong.

• ✗ 1. Article 368(2) allows the amending Bill to be introduced in either House of Parliament. The Rajya Sabha can take it up first as well. A Money Bill, by contrast, can be introduced only in the Lok Sabha, but an amendment Bill carries no such restriction.
• ✗ 2. The proviso to Article 368(2) covers federal matters such as the election of the President, the executive and legislative powers of the Union and States, the Seventh Schedule Lists and representation of States in Parliament. Such amendments must be ratified by resolutions of the Legislatures of not less than one-half of the States, not all States.

Remember · Article 368: an amendment Bill can start in the Lok Sabha or the Rajya Sabha. Federal-feature amendments need a special majority in Parliament plus ratification by at least half of the State legislatures.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (b) 2 only

Statement 2 alone is correct, so the answer is (b). The Deputy Chairman is chosen from among the Rajya Sabha's own members, so statement 1 is wrong. The Vice-President is elected by all members of both Houses, nominated members included. The President is elected only by elected members, which makes statement 2 right.

• ✗ 1. The Vice-President is the ex officio Chairman and is not a member of either House (Art. 66(2), 89(1)). The Deputy Chairman, however, is chosen by the Council from among its own members (Art. 89(2)). So the claim fails for the Deputy Chairman.
• ✓ 2. Art. 54 limits the Presidential electoral college to the elected members of Parliament and the State Legislative Assemblies, so nominated members cannot vote. Art. 66(1) makes the Vice-Presidential electoral college all members of both Houses of Parliament, so nominated members can vote.

Remember · President: only elected MPs and MLAs vote. Vice-President: all MPs vote, nominated ones included. The VP is not a member of either House, but the Deputy Chairman is a Rajya Sabha member.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (b) 2 and 3 only

The Public Accounts Committee has not more than 22 members drawn from both Houses: 15 elected by the Lok Sabha and not more than 7 from the Rajya Sabha. Its core work is to examine the Appropriation Accounts, the CAG's report on them, and the annual Finance Accounts of the Government. So statements 2 and 3 are correct and statement 1 is not.

• ✗ 1. The PAC is a joint committee of not more than 22 members. Fifteen are elected by the Lok Sabha and not more than seven are from the Rajya Sabha. Describing it as a body of up to 25 Lok Sabha members misstates both its size and its composition.
• ✓ 2. The Committee examines the Appropriation Accounts, which show how sums granted by Parliament were spent. It also examines the annual Finance Accounts of the Government.
• ✓ 3. The Committee examines the CAG's report on the Appropriation Accounts and other audit reports laid before Parliament. The CAG assists the Committee in this work.

Remember · PAC: up to 22 members (15 Lok Sabha + up to 7 Rajya Sabha), and no ministers. It scrutinises the appropriation accounts, the finance accounts and the CAG's audit reports.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (b) 2 and 3 only

Statements 2 and 3 repeat the Constitution almost word for word (Articles 75(2) and 78(a)). Statement 1 is wrong because Article 75(3) makes the Council of Ministers collectively responsible to the House of the People (Lok Sabha), not to Parliament as a whole.

• ✗ 1. Under Article 75(3), the Council of Ministers answers collectively to the House of the People, which is the Lok Sabha. The Rajya Sabha cannot remove the ministry by a no-confidence vote, so 'Parliament' is not correct.
• ✓ 2. Article 75(2) says the Ministers shall hold office during the pleasure of the President. In practice, this pleasure is exercised on the Prime Minister's advice.
• ✓ 3. Article 78(a) makes it the Prime Minister's duty to communicate to the President two things: all decisions of the Council of Ministers relating to the administration of the affairs of the Union, and proposals for legislation.

Remember · Collective responsibility (Art. 75(3)) runs to the Lok Sabha alone. Ministers serve at the President's pleasure (Art. 75(2)). The PM informs the President of the Council of Ministers' decisions and legislative proposals (Art. 78).

📘 Read it in NCERT: Class 11 Indian Constitution at Work, Ch 4 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (a) The Lok Sabha may still proceed with the Bill, accepting or not accepting the recommendations of the Rajya Sabha

The Rajya Sabha has no power to amend a Money Bill. It can only recommend changes, and the Lok Sabha is free to accept or reject any or all of them. So the Lok Sabha can go on with the Bill either way.

• ✓ (a) Under Article 109, the Rajya Sabha returns the Bill with recommendations. The Lok Sabha may accept or reject all or any of them and then proceed. If it accepts none, the Bill is deemed passed by both Houses in the form the Lok Sabha passed it.
• ✗ (b) The Lok Sabha is not barred from considering the Bill. The Rajya Sabha's recommendations are not binding, so the Lok Sabha simply decides what to do with them.
• ✗ (c) The Constitution gives no step of sending a Money Bill back to the Rajya Sabha for reconsideration. The Rajya Sabha gets the Bill once, for recommendations within 14 days.
• ✗ (d) A joint sitting under Article 108 is expressly not available for a Money Bill. In a Money Bill, the Lok Sabha's view prevails.

Remember · Rajya Sabha can only recommend, not amend, a Money Bill. It has 14 days. The Lok Sabha may accept or reject any recommendation. No joint sitting applies to Money Bills.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (d) without the consent of any State

Article 253 begins with 'Notwithstanding anything in the foregoing provisions of this Chapter'. It lets Parliament make any law for the whole or any part of India to implement any treaty, agreement or convention with other countries. It also covers any decision made at any international conference, association or other body. No State's consent is needed, even if the subject falls in the State List.

• ✓ (d) Article 253 gives Parliament this power and sets no condition of State consent. Its opening non obstante clause overrides the normal division of legislative subjects between the Union and the States.
• ✗ (a) Article 253 contains no requirement that all States consent.
• ✗ (b) Article 253 has no majority-of-States requirement. State consent plays no part in this provision.
• ✗ (c) This is the tempting option. State consent matters under Article 252, where Parliament legislates for two or more States after their legislatures pass resolutions asking it to. No such consent is needed under Article 253.

Remember · Article 253: Parliament can legislate on any subject, including State List matters, to implement international treaties, agreements, conventions or decisions of international bodies. No State's consent is required.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (c) Both 1 and 2

Both statements are correct. NALSA was set up under the Legal Services Authorities Act, 1987 to provide free and competent legal services to the weaker sections of society, so that justice is secured on a basis of equal opportunity. Section 4 of the Act empowers NALSA to lay down policies and schemes, and to coordinate, monitor and give general directions to the State Authorities. Section 7 obliges the State Authorities to give effect to NALSA's policies and directions.

• ✓ 1. NALSA's principal objective is to provide free and competent legal services to the weaker sections of society. It must also ensure that no citizen is denied the opportunity to secure justice because of economic or other disabilities. Both the Act's Preamble and Article 39A of the Constitution tie legal aid to justice on a basis of equal opportunity.
• ✓ 2. Under Section 4(a)–(b) of the 1987 Act, NALSA lays down policies and principles and frames schemes for legal services. Under Section 4(n), it coordinates and monitors the State Authorities and other legal services bodies. The same clause lets it give general directions for the proper implementation of legal services programmes. Section 7(1) requires each State Authority to give effect to NALSA's policies and directions.

Remember · NALSA was set up under the Legal Services Authorities Act, 1987, which came into force on 9 November 1995, and the Chief Justice of India is its Patron-in-Chief. It provides free, competent legal aid, lays down policies and schemes, and directs the State Legal Services Authorities.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (c) No procedure has been laid down in the Constitution of India for the removal of a Governor from his/her post

The Constitution has no removal or impeachment procedure for a Governor. Article 156 says only that the Governor holds office during the pleasure of the President, so the President can end the tenure. The other three statements contradict express constitutional provisions.

• ✗ (a) The proviso to Article 153, added by the 7th Amendment (1956), says nothing prevents appointing the same person as Governor of two or more States. Joint charge is therefore allowed.
• ✗ (b) Under Article 217, every High Court Judge is appointed by the President by warrant under his hand and seal. The Governor is only one of the persons consulted. The Governor does not appoint them.
• ✓ (c) Article 156(1) makes the Governor hold office during the President's pleasure. Unlike the President (Article 61), no impeachment or inquiry procedure is prescribed. Removal follows from the President's pleasure, which in practice means the Union Council of Ministers' advice.
• ✗ (d) For Delhi, Article 239AA(5) says the Chief Minister is appointed by the President, not by the Lt. Governor. So the statement is not true of Union Territories with a legislature.

Remember · Governor: appointed by the President (Art 155), holds office at the President's pleasure (Art 156), with no impeachment. High Court Judges are appointed by the President. Delhi's CM is also appointed by the President.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (c) To create autonomous regions in tribal areas

PESA, 1996 extends the Panchayat system (Part IX of the Constitution) to Scheduled Areas and gives Gram Sabhas special powers. It aims to secure tribal self-governance, protect customs and traditional rights, and safeguard tribals from exploitation. It does not create autonomous regions. Autonomous districts and regions belong to the separate Sixth Schedule arrangement.

• ✗ (a) Self-governance is a core aim. The Act gives Gram Sabhas and Panchayats special powers so that tribal communities can govern themselves.
• ✗ (b) The Act makes every Gram Sabha competent to safeguard the traditions, customs, cultural identity and community resources of the people. This recognises their traditional rights.
• ✓ (c) The Act only extends Part IX (Panchayats), with modifications, to the Scheduled Areas referred to in Article 244(1). It sets up no autonomous regions or districts. Those come under the Sixth Schedule, which covers tribal areas in Assam, Meghalaya, Tripura and Mizoram.
• ✗ (d) The Act protects tribals against exploitation through Gram Sabha and Panchayat powers. These include control over money-lending, prevention of land alienation and restoration of unlawfully alienated land, and a say before minor-mineral concessions are granted.

Remember · PESA 1996 extends Part IX (Panchayats) to Fifth Schedule areas and strengthens the Gram Sabha. Autonomous districts and regions belong to the Sixth Schedule, not PESA.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (d) Gram Sabha

Section 6(1) of the Forest Rights Act, 2006 names the Gram Sabha as the authority that starts the process of deciding the nature and extent of individual and community forest rights. Officials come in only at later stages, to examine and decide the claims the Gram Sabha passes up.

• ✗ (a) The Forest Department is not the Section 6(1) authority and does not start the process. Forest officers sit only on the later committees that examine and decide claims after the Gram Sabha has acted.
• ✗ (b) The District Collector chairs the District Level Committee, whose decision on the record of forest rights is final. It decides claims at the end and does not initiate the process.
• ✗ (c) These officials are not the initiating authority. Once the Gram Sabha passes its resolution, the Sub-Divisional Level Committee examines it and prepares the record of forest rights for the District Level Committee.
• ✓ (d) Under Section 6(1), the Gram Sabha starts the process. It receives claims, consolidates and verifies them, and prepares a map of each recommended claim. It then passes a resolution and forwards it to the Sub-Divisional Level Committee.

Remember · Under FRA 2006, the Gram Sabha (the full village assembly, not the gram panchayat) initiates forest-rights claims. The Sub-Divisional and District Level Committees examine and decide them afterwards.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (c) 1, 2 and 3

The correct answer is (c), statements 1, 2 and 3. Article 88 gives the Attorney-General the right to speak in, and take part in the proceedings of, either House of Parliament. The same right extends to any joint sitting and to any parliamentary committee of which he is named a member. The Article expressly denies him a vote.

• ✓ 1. Article 88 lets the Attorney-General take part in the proceedings of either House, and that includes the Lok Sabha.
• ✓ 2. Article 88 covers 'any committee of Parliament of which he may be named a member'. He can therefore be named to a Lok Sabha committee and take part in its work.
• ✓ 3. Article 88 gives him the right to speak in either House.
• ✗ 4. Article 88 says he is not entitled to vote 'by virtue of this article'. He is not a member of either House, so he has no vote in the Lok Sabha.

Remember · Article 88: the Attorney-General, like a Minister, can speak and take part in the proceedings of either House, joint sittings, and committees he is named to, but cannot vote.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (b) 2 and 3 only

Statement 1 is wrong because the National Development Council (NDC) was a separate body that the Union government set up in 1952, not a part of the Planning Commission. Statements 2 and 3 are correct. Economic and social planning is Entry 20 of the Concurrent List. Article 243G deals with Panchayats preparing plans for economic development and social justice.

• ✗ 1. The NDC was set up in August 1952 by a Government of India resolution. It was a separate forum of the Prime Minister, Union Ministers, Chief Ministers and Planning Commission members, and it reviewed the Plans. It was not an organ of the Commission.
• ✓ 2. Entry 20 of the Concurrent List (List III, Seventh Schedule) is 'Economic and social planning'. Both Parliament and State legislatures can make laws on it. The Union used this entry to constitute the Planning Commission in 1950 and the NDC in 1952.
• ✓ 3. Article 243G (Part IX, inserted by the 73rd Amendment) lets State laws devolve to Panchayats the 'preparation of plans for economic development and social justice'. It also covers implementing such schemes, including those on matters in the Eleventh Schedule.

Remember · Concurrent List Entry 20 is economic and social planning. Article 243G gives Panchayats planning for economic development and social justice. The NDC (1952) was a separate body created by a Government of India resolution, not part of the Planning Commission.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (b) 1, 3 and 4 only

In 2013 the National Development Council (NDC) had the Prime Minister at its head. Its members were all Union Cabinet Ministers, the Chief Ministers of all States, representatives of Union Territories and the members of the Planning Commission. The Chairman of the Finance Commission was not a member.

• ✓ 1. The Prime Minister heads the NDC and presides over its meetings.
• ✗ 2. The Finance Commission is a separate constitutional body under Article 280, and its Chairman is not on the NDC. The members of the Planning Commission sat on the NDC; the Finance Commission's Chairman did not.
• ✓ 3. All Union Cabinet Ministers are members of the NDC.
• ✓ 4. The Chief Ministers of all States sit on the NDC, which gives States a direct voice in approving the Plans. So 1, 3 and 4 are correct.

Remember · NDC (1952) members: PM (chair), Union Cabinet Ministers, all State Chief Ministers, UT representatives, and Planning Commission members. The Finance Commission Chairman is not a member.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (d) 1, 2 and 3

None of the three bodies is named in the Constitution. The Planning Commission and the National Development Council were set up by resolutions of the Government of India. The Zonal Councils were set up by an Act of Parliament, the States Reorganisation Act, 1956.

• ✓ 1. The National Development Council was set up in August 1952 by a Government of India resolution. It is an executive creation, and the Constitution has no article on it.
• ✓ 2. The Planning Commission was set up on 15 March 1950 through a Cabinet Resolution. It is not one of the bodies set up by the Constitution.
• ✓ 3. The five Zonal Councils were set up under Part III of the States Reorganisation Act, 1956, so they are statutory bodies, not constitutional ones. Do not confuse them with the Inter-State Council, which is provided for in Article 263.
• • Since then Since the exam, the Government has replaced the Planning Commission with NITI Aayog, constituted by a Cabinet Resolution of 1 January 2015.

Remember · Planning Commission and NDC are extra-constitutional bodies created by executive resolution. Zonal Councils are statutory, created by the States Reorganisation Act, 1956. The Inter-State Council, by contrast, is provided for in Article 263.

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Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (a) 1 only

Only statement 1 is correct. Inflation cuts the real value of money. A debtor repays a fixed money amount in rupees that buy less, so the debtor gains. A bond-holder receives fixed interest and principal whose purchasing power has fallen, so the bond-holder loses.

• ✓ 1. A loan is repaid in fixed nominal terms. Unanticipated inflation reduces the real value of the debt, so net debtors gain and net creditors lose.
• ✗ 2. A conventional bond pays fixed nominal interest and a fixed principal. Inflation erodes their real value, so bond-holders' wealth is diminished. The longer the bond's life, the more its fixed payments are exposed to rising prices.

Remember · Inflation helps debtors and borrowers, because they repay in cheaper money. It hurts creditors, bond-holders and holders of fixed-income assets, whose receipts buy less.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (d) Creating new money to finance a budget deficit

Creating new money to finance a deficit is the most inflationary route. It adds fresh high-powered money to the economy, raising demand with no matching cut in anyone else's spending power. Borrowing from the public only shifts existing money. Borrowing from banks can expand credit but adds no new reserve money. Repaying debt finances no deficit at all.

• ✗ (a) Repaying public debt transfers money back to bondholders. It does not finance a deficit or create new money, so its effect on prices is far weaker than monetising a deficit.
• ✗ (b) Borrowing from the public moves existing purchasing power from savers to the government. What the government spends, the public gives up, so the money supply does not rise and the inflationary push is limited.
• ✗ (c) Commercial banks can lend to the government by creating credit, so this is more inflationary than borrowing from the public. But it is limited by the banks' reserves and adds no new reserve money. It is therefore less inflationary than creating fresh money.
• ✓ (d) When the central bank funds the government's spending, new currency or reserve money is created. This is called monetisation of the deficit. Each unit of this high-powered money can support a multiple expansion of money and credit, so demand rises without a matching rise in output.

Remember · Deficit financing through new money (monetisation) is the most inflationary route. Bank borrowing comes next, and borrowing from the public only shifts existing money.

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Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (d) 1, 2 and 3

The general price level depends on how much money and demand are chasing the available goods. More money or more demand pushes prices up. Less output with the same demand does too. So all three can cause a general rise in prices.

• ✓ 1. A larger money supply adds to spending power. RBI research on Indian inflation finds that money supply growth, along with the output gap, explains a large part of the variation in inflation.
• ✓ 2. If total output falls while demand stays the same, the same money chases fewer goods. Buyers compete for the smaller supply, and the result is a supply-side rise in prices.
• ✓ 3. When aggregate demand is more than the output the economy can produce at full employment, there is excess demand. NCERT says this leads to a rise in prices.

Remember · Prices rise from the demand side (more money, more effective demand) and from the supply side (less output). Inflation is a mismatch between spending power and goods available.

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Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (b) an increase in the rate of interest

The answer is (b). The rate of interest is the price of holding money. If people want to hold more money and the supply is fixed, money becomes scarcer relative to demand. The interest rate has to rise until people are again willing to hold only the money that exists.

• ✗ (a) In the money market, the interest rate is the price that balances money demand against a fixed money supply. A change in the general price level is not the adjustment this situation produces.
• ✓ (b) People who want more money sell bonds or draw down interest-earning deposits. Bond prices fall and the market interest rate rises. At a higher rate, holding money costs more in interest given up, so the extra demand is choked off and the money market clears at a higher rate.
• ✗ (c) A lower rate of interest results when money supply increases: more money chasing bonds pushes bond prices up and the rate down. That is the opposite of what a rise in demand with fixed supply produces.
• ✗ (d) Higher interest rates make borrowing and investment costlier, so they do not raise income and employment. Income is a cause of money demand, not an outcome of this change.

Remember · Money demand up, money supply fixed → interest rate up. Money supply up, demand fixed → interest rate down. The interest rate is the 'price' of holding money.

📘 Read it in NCERT: Class 12 Introductory Macroeconomics, Ch 3 (practise this chapter) · Class 12 Introductory Macroeconomics, Ch 3 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (c) Purchase and sale of government securities by the RBI

Open Market Operations (OMO) are a monetary policy tool. The RBI buys or sells government securities in the open market to change the amount of money (liquidity) in the banking system. Buying adds money and selling removes it.

• ✓ (c) OMO is the buying and selling of government bonds in the open market, carried out by the central bank on the government's behalf. When the RBI buys these securities, bank reserves and money supply rise. When it sells them, reserves and money supply fall.
• ✗ (a) Banks borrowing from the RBI is a different tool. It works through the repo rate, the bank rate or liquidity windows, not through open market operations.
• ✗ (b) Commercial bank lending to industry and trade is ordinary bank credit. It is not a central bank policy operation.
• ✗ (d) Option (c) is correct, so 'None of the above' cannot be right.

Remember · OMO means the RBI buying (injects liquidity) or selling (absorbs liquidity) government securities. It is a quantitative tool, like CRR and bank rate.

📘 Read it in NCERT: Class 12 Introductory Macroeconomics, Ch 3 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (d) All of the above

All three areas count as priority sector lending, so (d) is correct. RBI's guidelines in force in 2013 listed agriculture and micro and small enterprises as priority sector categories. Advances to weaker sections were also covered, with a sub-target of 10 per cent of Adjusted Net Bank Credit (ANBC) for domestic banks.

• ✓ (a) Agriculture is the first listed category of priority sector lending. For domestic banks it carries its own sub-target within the overall 40 per cent of ANBC target.
• ✓ (b) Micro and Small Enterprises is a separate priority sector category. Advances to it count towards the overall priority sector target.
• ✓ (c) Advances to weaker sections are covered under priority sector lending, with a sub-target of 10 per cent of ANBC (or the credit equivalent of off-balance-sheet exposure, whichever is higher). Each of a, b and c is correct on its own, which makes 'All of the above' the right choice.
• ✓ (d) Agriculture, micro and small enterprises and weaker sections all fall under priority sector lending. Education, housing and export credit are also listed categories, so the three items in the question are only part of the list.

Remember · In 2013 the priority sector categories were agriculture, MSE, education, housing, export credit and others. For domestic banks, weaker sections carried a 10% of ANBC sub-target within an overall 40% of ANBC target.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (c) 1 and 3 only

Regional Rural Banks and Land Development Banks lend directly to farmers and rural households. NABARD is an apex refinance and development body. It funds the banks that do the lending and does not give credit directly to households.

• ✓ 1. RRBs are part of the multi-agency rural banking structure. They lend directly to rural borrowers such as small and marginal farmers, agricultural labourers and artisans.
• ✗ 2. NABARD was set up in 1982 as the apex body to coordinate rural financing institutions. It supports rural development by funding the banks that give the loans, so its assistance to households is indirect (refinance).
• ✓ 3. Land Development Banks are part of the multi-agency rural credit structure. They give long-term loans directly to farmers, for example for land improvement and farm investment.

Remember · NABARD is the apex refinancing and development bank for rural credit. RRBs, cooperatives, Land Development Banks and commercial banks are the ones that lend directly to rural households.

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Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (d) 1, 2, 3 and 4

The Banking Regulation Act, 1949 gives the RBI a regulatory role in all four areas. It prescribes the liquid assets banks must hold (SLR), and its prior approval is needed for new branches. It can approve bank amalgamations, and a High Court must order a bank wound up when the RBI applies for it.

• ✓ 1. Section 24 of the Banking Regulation Act requires banks to hold liquid assets. The RBI prescribes and monitors this Statutory Liquidity Ratio (SLR) and decides which securities count as eligible assets.
• ✓ 2. Under Section 23, a bank cannot open a new place of business in India or abroad without the RBI's prior approval. Nor can it shift an existing one outside the same city, town or village without that approval.
• ✓ 3. Under Section 44A, the RBI has discretionary power to approve the voluntary amalgamation of two banking companies.
• ✓ 4. Under Section 38, the High Court shall order the winding up of a banking company if the RBI has applied for it under Section 37. The RBI therefore plays a regulatory role in winding up banks.

Remember · Under the Banking Regulation Act, 1949, the RBI regulates bank liquidity (s.24), branch opening (s.23) and amalgamation (s.44A). It can also seek winding up of a bank through the High Court (s.38).

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (d) 4–1–3–2

Liquidity means how quickly and freely an asset can be used to pay. Currency is already cash, so it is the most liquid. Demand deposits can be withdrawn at any time. Savings deposits come next because they limit the number and amount of withdrawals. Time deposits are locked for a fixed period, so they are the least liquid. The order is 4–1–3–2.

• ✓ 4. Currency (notes and coins) is legal tender and settles any payment directly. It is the most liquid asset and comes first.
• ✓ 1. RBI defines a demand deposit as one that is "withdrawable on demand". Cheques drawn on it are used to settle payments, so it ranks just below currency.
• ✓ 3. A savings deposit is a form of demand deposit, but it is subject to limits on the number and amount of withdrawals in a period. It is therefore less liquid than a current-account type demand deposit.
• ✓ 2. A term deposit is received for a fixed period, so the money is not freely available before maturity. It is the least liquid of the four.
• ✗ a/b/c Option (a) puts demand deposits above currency. Option (b) puts time deposits above demand deposits. Option (c) reverses the whole order. Only 4–1–3–2 matches the order of liquidity.

Remember · Order of liquidity: currency > demand (current) deposits > savings deposits > time deposits. This matches M1 (currency + demand deposits) being more liquid than M3 (which adds time deposits).

📘 Read it in NCERT: Class 12 Introductory Macroeconomics, Ch 3 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (b) Foreign-currency assets, gold holdings of the RBI and SDRs

India's foreign-exchange reserves are made up of foreign currency assets, gold, SDRs and the reserve tranche position in the IMF. Loans, whether from foreign countries or the World Bank, are liabilities and are not a component of the reserves. So the only correct group is foreign-currency assets, gold and SDRs.

• ✓ (b) Foreign currency assets, gold and SDRs are all listed components of the reserves. The fourth component is the reserve tranche position in the IMF.
• ✗ (a) FCA and SDRs are components, but loans from foreign countries are borrowings. They are not a component of the reserves.
• ✗ (c) Loans from the World Bank are not a reserve component. Gold, a listed component, is left out.
• ✗ (d) Gold and FCA are components, but World Bank loans are not. SDRs are also left out.

Remember · India's forex reserves have four parts: foreign currency assets, gold, SDRs and the reserve tranche position in the IMF. Loans are not one of the components.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (a) Promoting skill development

The demographic dividend comes from having a large working-age population. It turns into real economic gain only if those workers are productive and employable. Skill development is the policy that does this, and India's National Policy on Skill Development (2009) names skilling as the way to harness the dividend.

• ✓ (a) The 2009 National Policy on Skill Development says that harnessing the demographic dividend through appropriate skill development efforts offers inclusion and productivity. A large workforce without skills cannot deliver the benefit.
• ✗ (b) Social security schemes protect people against risks such as old age and illness. They do not by themselves make the working-age population more productive or employable.
• ✗ (c) Lower infant mortality is a health gain. It does not decide whether today's working-age population finds productive work.
• ✗ (d) Privatising higher education is not a stated route to the dividend. The policy focus is on building skills and employability across the whole workforce.

Remember · The demographic dividend is not automatic, and the window does not last forever. It must be consciously exploited through policy, mainly skilling and employment, to turn a large working-age population into growth.

📘 Read it in NCERT: Class 12 Indian Society, Ch 2 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (c) Marginal productivity of labour is zero

Disguised unemployment means more workers are engaged in a job, typically family farming, than the work needs. Everyone looks employed, but the extra workers add nothing to output. Their marginal productivity is zero, so withdrawing them would not reduce production.

• ✓ (c) Surplus workers on a farm or in a family enterprise add no output. Take a farm that needs only two workers and the farmer himself, but employs five workers plus the farmer's wife and children. That situation is disguised unemployment. It arises when a worker's marginal contribution to output is zero or negative.
• ✗ (a) This describes open unemployment, where people have no work and are visibly jobless. In disguised unemployment people appear to be working, so they do not show up as unemployed.
• ✗ (b) Lack of alternative jobs is a cause or background condition, not the definition. The defining feature is that the surplus workers contribute nothing to output.
• ✗ (d) Low productivity is a wider idea that also fits underemployment and low-skill work. Disguised unemployment is the narrower case where the extra worker's contribution is zero, not just low.

Remember · Disguised unemployment is hidden surplus labour, mostly in Indian agriculture. Workers look employed, but their marginal productivity is zero, so removing them leaves total output unchanged.

📘 Read it in NCERT: Class 11 Indian Economic Development, Ch 6 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (c) there is capital formation in X

Capital formation in X is the answer. Economic growth means a rise in a country's real national income, and that comes from expanding its productive capacity. Capital formation in X is a net addition to X's own capital stock, so it directly enlarges what X can produce. The other three conditions either happen outside X or do not by themselves guarantee a rise in X's output.

• ✗ (a) Technical progress elsewhere in the world does not by itself raise output in X. X gains only if it adopts that technology, which usually needs investment in X.
• ✗ (b) More people do not guarantee more output. Without matching capital, jobs and skills, output may not rise, and income per head can stay flat or fall. So population growth does not ensure economic growth.
• ✓ (c) New capital formation (net investment, meaning gross investment minus depreciation) adds machines, factories and infrastructure to X's capital stock. This expands X's productive capacity and so raises its real income. Investment is the key driver that creates capacity and raises labour productivity.
• ✗ (d) Growth in world trade can help countries that trade, but it happens outside X. It does not by itself expand X's capacity to produce, so it does not guarantee growth in X.

Remember · Growth means a rise in real national income. It rests on domestic capital formation, meaning net additions to the capital stock. World events or population growth alone do not guarantee it.

📘 Read it in NCERT: Class 12 Introductory Macroeconomics, Ch 2 (practise this chapter) · Class 11 Indian Economic Development, Ch 4 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (d) money value of final goods and services produced

National income measures the money value of a country's output of final goods and services over a period. Only final goods are counted because their value already includes the intermediate goods used to make them. Counting intermediate goods as well would count the same value twice. Option (d) is the only choice built on final output. Option (a) takes the total value of all goods and services, which brings in that double counting.

• ✓ (d) Without indirect taxes and subsidies, the total value of final goods and services produced in the economy equals National Income. The word 'final' is what keeps the measure free of double counting.
• ✗ (a) The flaw is 'total value of goods and services'. That total includes intermediate goods, such as the flour used to make bread. Counting these separately from the final goods they enter is the error of double counting.
• ✗ (b) Expenditure on final output is C + I + G + X – M: consumption, investment, government expenditure and net exports. Adding only consumption and investment leaves out government spending and net exports.
• ✗ (c) Personal Income is derived from National Income, not equal to it. Undistributed profits and corporate tax are deducted because they do not reach households, and transfer payments are added.

Remember · National income is the money value of final goods and services only, because adding intermediate goods means double counting. In its strict form it is NNP at factor cost.

📘 Read it in NCERT: Class 12 Introductory Macroeconomics, Ch 2 (practise this chapter) · Class 12 Introductory Macroeconomics, Ch 2 (practise this chapter) · Class 12 Introductory Macroeconomics, Ch 4 (practise this chapter) · Class 12 Introductory Macroeconomics, Ch 2 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (a) all import and export transactions of a country during a given period of time, normally a year

The balance of payments (BoP) records a country's transactions with the rest of the world over a set period, usually a year. Option (a) is the only choice that covers both imports and exports over such a period. The other options each cover only a part of it.

• ✓ (a) The BoP is a record of a country's external transactions over a specified period, typically a year. It covers purchases and sales of goods and services, which are the import and export transactions. It also covers assets, which option (a) does not mention, but of the four options this is the closest description.
• ✗ (b) Goods exported are only one entry on the credit side of the current account. The BoP also records imports, services, income, transfers and capital flows.
• ✗ (c) The BoP covers transactions between a country's residents (households, firms and government) and the rest of the world. It is not limited to government-to-government dealings.
• ✗ (d) Capital movements make up only the capital account of the BoP. The other main part is the current account, which covers goods, services, income and transfers.

Remember · BoP = record of transactions in goods, services and assets between residents and the rest of the world over a period, typically a year. It has a current account and a capital account.

📘 Read it in NCERT: Class 12 Introductory Macroeconomics, Ch 6 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (d) Central Bank is following a tight money policy

The Bank Rate is the price the RBI charges banks for its loans. When it goes up, banks find such borrowing costlier, hold fewer reserves and lend less, so money supply shrinks. This is a tight (contractionary) monetary stance.

• ✗ (a) A higher Bank Rate raises banks' cost of funds, so market interest rates tend to rise, not fall.
• ✗ (b) A higher Bank Rate does not stop the RBI from lending. It only makes those loans more expensive.
• ✗ (c) An easy money policy lowers the Bank Rate to expand money supply. A rise points the other way.
• ✓ (d) Costlier loans from the RBI reduce commercial banks' reserves and credit. This is a tight money policy.

Remember · Bank Rate up means costlier RBI loans, less money supply and credit (tight policy). Bank Rate down means an easy policy.

📘 Read it in NCERT: Class 12 Introductory Macroeconomics, Ch 3 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (a) economic development

In India, deficit financing has been used to raise resources for economic development. Under the Five Year Plans it filled the gap between the outlay needed for planned development and what taxes, borrowing and external aid could provide. The government spends more than its receipts, and the gap is met mainly by borrowing from the RBI or drawing down cash balances.

• ✓ (a) Deficit finance was counted as a resource for financing India's Plan development outlay. In the early Plans, deficit finance of Rs 4.2 billion stood alongside external assistance and other capital receipts as a source of funds. Its purpose was to pay for economic development.
• ✗ (b) Redeeming public debt means repaying past borrowing. That is not the purpose for which deficit financing was used in India; its purpose was to fund development spending.
• ✗ (c) The balance of payments is corrected through trade, exchange-rate and foreign-exchange measures. Deficit financing expands domestic spending and money supply. By pushing up prices and imports, it can even worsen the external position.
• ✗ (d) Foreign debt has to be serviced in foreign exchange. Deficit financing creates domestic rupee resources for government spending, so reducing foreign debt is not its purpose.

Remember · Deficit financing means the government spends beyond its receipts, mainly through RBI credit or drawing down cash balances. In India it was a Plan resource for economic development, with a risk of inflation.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (d) Revolution of the earth on a tilted axis

The Earth's axis is tilted relative to its orbit, and the Earth keeps this tilt as it goes round the Sun. So the Sun's rays fall differently on each hemisphere through the year. This changes the length of day and night from season to season. Both the tilt and the revolution are needed.

• ✓ (d) The Earth keeps its tilted axis as it orbits the Sun. Because of this, each hemisphere is tilted towards the Sun for part of the year and away from it for the rest. Days are therefore longer in summer and shorter in winter.
• ✗ (a) Rotation on the axis gives the daily cycle of day and night, about 24 hours. It does not make day length change across seasons.
• ✗ (b) The elliptical orbit alone does not explain it. Without the tilt, day and night would stay roughly equal everywhere through the year. The tilt is the key factor.
• ✗ (c) Latitude decides how large the seasonal variation is at a place. It is not the cause of the variation itself.

Remember · Seasons and the changing length of day and night come from revolution combined with the 23½° axial tilt. Rotation alone gives only day and night.

📘 Read it in NCERT: Class 7 Curiosity, Ch 12 (practise this chapter) · Class 9 Exploration, Ch 13 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (d) 1, 2 and 3

Equatorial (tropical evergreen) forests grow where it is hot and wet all year. Their tall trees form a dense, continuous canopy. They hold a very large number of species. Their trees carry abundant epiphytes. All three statements describe them.

• ✓ 1. The forest is well stratified, with shrubs and creepers near the ground, shorter trees above them and tall trees on top that can reach 60 m or more. This dense canopy cover is typical of the equatorial climate.
• ✓ 2. Constant warmth and moisture support very high biodiversity. A very large number of plant and animal species live together in these forests.
• ✓ 3. The humid, shaded forest suits epiphytes such as orchids and ferns. These plants grow on tree trunks and branches and are abundant in rain forests, especially the wetter types.
• ✓ (d) All three features belong to equatorial forests, so '1, 2 and 3' is right. Options (a), (b) and (c) each wrongly leave out at least one of them.

Remember · Equatorial rain forest: hot and wet all year, tall layered evergreen trees with a dense canopy, very high species diversity, and abundant epiphytes and lianas.

📘 Read it in NCERT: Class 11 Fundamentals of Physical Geography, Ch 11 (practise this chapter) · Class 11 India: Physical Environment, Ch 5 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (a) 1 only

Land heats up and cools down quickly, while the sea does both slowly. So places far from the sea swing between hot summers and cold winters, while coasts stay moderate. Of the reasons listed, only this land–water thermal difference explains the pattern.

• ✓ 1. Land warms and cools fast, while water warms and cools slowly. Interiors therefore have a large gap between the warmest and coldest months, while the nearby sea moderates temperatures at the coast. This effect is called continentality. It is why north-eastern Eurasia records an annual range of more than 60°C.
• ✗ 2. Altitude lowers temperature with height, at about 6.5°C per 1,000 m. That affects how cold a place is overall, not the gap between its summer and winter temperatures. The contrast between interiors and coasts comes from distance from the sea, not from height.
• ✗ 3. Strong winds in the interior are not what creates the large annual range. The range comes from the unequal heating and cooling of land and water.
• ✗ 4. Continental interiors generally receive less rain than coasts, not more. Rainfall is not the cause of the large annual range; the cause is how quickly land gains and loses heat.

Remember · Continentality: land heats and cools quickly, water slowly. Continental interiors such as Siberia have a large annual range of temperature, while coasts have a small one.

📘 Read it in NCERT: Class 11 Fundamentals of Physical Geography, Ch 8 (practise this chapter) · Class 11 Fundamentals of Physical Geography, Ch 8 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (b) Central Asian Steppe

The answer is (b) Central Asian Steppe. It is a semi-arid grassland deep in the continental interior, with hot summers and very cold winters, so its climate is extreme and its rainfall scanty. Its traditional people, such as the Mongols, were nomads who herded livestock across the grasslands.

• ✗ (a) The African Savannah is a tropical grassland that stays warm throughout the year and gets a distinct rainy season. Its climate is not extreme in the continental sense, and its rainfall is seasonal rather than scanty.
• ✓ (b) Steppe is the climatic term for a semi-arid dry climate, so rainfall is scanty. Lying in the interior of Asia, far from the sea, it has very hot summers and very cold winters. The Mongols of Central Asia were nomads, and the core region of pastoral nomadism extends eastwards into Mongolia and Central China.
• ✗ (c) The North American Prairie is a temperate grassland now known for extensive commercial grain farming and ranching. Its people were not nomadic herders.
• ✗ (d) The Siberian Tundra's climate is defined by long, bitterly cold polar conditions and frozen subsoil, not a hot-summer, cold-winter extreme. Reindeer herding there is a continuing way of life, not something people 'used to' do.

Remember · Steppe means semi-arid temperate grassland: extreme continental temperatures, scanty rain, and a history of pastoral nomads such as the Mongols of Central Asia.

📘 Read it in NCERT: Class 11 Fundamentals of Physical Geography, Ch 11 (practise this chapter) · Class 11 Themes in World History, Ch 2 (practise this chapter) · Class 12 Fundamentals of Human Geography, Ch 4 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (d) None of the above

Thunder is the sound produced by lightning. A lightning stroke heats the air along its channel to an extremely high temperature almost instantly. The air expands explosively, creating a shock wave that turns into the booming sound we hear. None of the three statements describes this process, so the answer is (d).

• ✗ 1. Clouds do not 'meet' to make thunder. The sound comes from air along a lightning channel expanding suddenly, not from cumulonimbus clouds colliding.
• ✗ 2. Lightning is an electrical discharge; it does not 'separate' clouds. Thunder is the sound of the air that lightning heats and expands. Lightning is the cause of thunder, but this statement gives a wrong mechanism.
• ✗ 3. Strong updraughts help a thunderstorm develop and build up electric charge. They are not what makes the sound of thunder.
• ✓ (d) Thunder comes from the rapid heating and explosive expansion of air by the lightning discharge. None of statements 1 to 3 describes this.

Remember · Thunder is the sound of air heated by lightning to tens of thousands of degrees and expanding explosively. Lightning causes thunder, not the other way round.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (c) Warm and cold oceanic currents meet

Where warm and cold ocean currents mix, oxygen is replenished. This helps plankton grow, and plankton is the primary food of fish. So the world's best fishing grounds lie in these mixing zones.

• ✓ (c) Mixing of warm and cold oceanic currents replenishes oxygen and favours plankton growth. Fish gather where plankton is abundant, for example off Newfoundland, where the warm Gulf Stream meets the cold Labrador Current.
• ✗ (a) Atmospheric currents are winds. They do not create the plankton-rich water that supports fish populations.
• ✗ (b) River freshwater can add nutrients locally. It is not the main reason for the world's major fishing grounds, which are tied to current mixing zones.
• ✗ (d) A broad continental shelf helps fishing, but an undulating shelf is not the key factor. The decisive factor is the meeting of warm and cold currents.

Remember · The world's best fishing grounds lie where warm and cold ocean currents mix, because plankton thrives there. Examples are Newfoundland (Grand Banks) and the NW Pacific near Japan.

📘 Read it in NCERT: Class 11 Fundamentals of Physical Geography, Ch 13 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (c) 1 and 4

Only statements 1 and 4 are correct. Laterite soils are reddish because they are rich in iron, and they suit crops like tapioca and cashew. Heavy rain leaches out their nutrients, so they are acidic and poor in nitrogen and potash. They occur mainly in the southern states, the Western Ghats, Odisha, parts of West Bengal and the North-east, not in Rajasthan or UP.

• ✓ 1. Laterite soils are typically red because of iron oxides. Red laterite soils are found in Tamil Nadu, Andhra Pradesh and Kerala.
• ✗ 2. Intense leaching under heavy rain removes nutrients. These soils are acidic and generally deficient in plant nutrients, including nitrogen and potash.
• ✗ 3. They occur mostly in the southern states, the Western Ghats region of Maharashtra, Odisha, some parts of West Bengal and the North-east. Rajasthan and UP are not laterite regions.
• ✓ 4. Red laterite soils in Tamil Nadu, Andhra Pradesh and Kerala are well suited to cashew nut. In Kerala, laterite soils are mainly cultivated with crops such as coconut, arecanut, banana and tapioca.

Remember · Laterite: leached, acidic, nutrient-poor, reddish; found in the south, Western Ghats, Odisha and the North-east. Suits cashew, tapioca, tea, coffee and rubber. Not found in Rajasthan or UP.

📘 Read it in NCERT: Class 10 Contemporary India – II, Ch 1 (practise this chapter) · Class 10 Contemporary India – II, Ch 1 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (a) 1 and 2

Statements 1 and 2 are correct, so the answer is (a). Gondwana sediments hold natural gas: they contain all of India's coalbed methane (CBM) producing blocks, and Permo-Triassic Gondwana-age sandstone in the Krishna-Godavari basin holds commercial hydrocarbons. Koderma is the leading mica area. India's petroleum comes mostly from Tertiary rocks, not Dharwar rocks.

• ✓ 1. The Gondwana sediments of eastern India host the bulk of India's coal reserves and all the current CBM producing blocks. CBM is natural gas, mainly methane. In the Krishna-Godavari basin, the Permo-Triassic Mandapeta Sandstone, a Gondwana-age unit, also holds commercial hydrocarbon accumulations. Gondwana beds are best known for coal, but natural gas does occur in them.
• ✓ 2. Mica deposits are found along the northern edge of the Chota Nagpur plateau. The Koderma–Gaya–Hazaribagh belt of Jharkhand is the leading producer. 'Kodarma' is an alternative spelling of Koderma.
• ✗ 3. Most of India's petroleum occurs in anticlines and fault traps in Tertiary-age rocks. Dharwar rocks are very old metamorphic rocks that are valued for metallic minerals such as iron ore, manganese, gold and uranium, not petroleum.
• ✗ (b) This option leaves out statement 1, which is true. Gondwana sediments do contain natural gas, so 'Mica only' is incomplete.
• ✗ (c) It includes statement 3, which is wrong because Dharwar rocks are not a petroleum source.
• ✗ (d) Statements 1 and 2 are both correct.

Remember · Gondwana beds are mainly coal, but they also hold gas, including all of India's CBM blocks. Koderma is the leading mica area. Petroleum comes mostly from Tertiary rocks, while Dharwar rocks carry metallic minerals such as iron ore, manganese, gold and uranium.

📘 Read it in NCERT: Class 10 Contemporary India – II, Ch 5 (practise this chapter) · Class 10 Contemporary India – II, Ch 5 (practise this chapter) · Class 12 India: People and Economy, Ch 5 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (d) 1, 2, 3, 4, 5 and 6

All six are responsible, so the answer is (d). Surface changes come from internal (endogenic) and external (exogenic) forces. Geothermal energy and plate movements drive the internal ones. Solar radiation and gravity drive the external ones. Earth's rotation and revolution add to both.

• ✓ 1. Electromagnetic radiation, mainly from the sun, is the ultimate energy source for exogenic processes such as weathering and erosion. The sun's heating sets up the atmospheric conditions that drive them.
• ✓ 2. Geothermal gradients and heat flow from within the earth induce diastrophism and volcanism in the lithosphere. These are the endogenic processes.
• ✓ 3. Gravity acts on all earth materials on a slope and pulls them downslope. This causes mass movements and powers the work of running water, glaciers and other agents.
• ✓ 4. Plate movements are tectonic (diastrophic) movements. They build mountains, rifts, volcanoes and earthquake zones. They also create the slopes on which exogenic processes act.
• ✓ 5. Rotation causes the day–night temperature cycle, the Coriolis deflection of winds and ocean currents, and the daily rise and fall of tides, all of which work on the surface. Rotational and tidal friction is also one of the sources of the earth's internal energy.
• ✓ 6. Revolution, together with the tilt of the axis, produces the seasons. Seasonal changes in temperature and rainfall alter the rates of weathering, erosion and deposition.

Remember · Endogenic forces (geothermal heat, plate movements) build the surface. Exogenic forces (solar energy, gravity) wear it down. Earth's rotation and revolution also modify it.

📘 Read it in NCERT: Class 11 Fundamentals of Physical Geography, Ch 5 (practise this chapter) · Class 11 Fundamentals of Physical Geography, Ch 5 (practise this chapter) · Class 11 Fundamentals of Physical Geography, Ch 5 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (a) 1 and 2 only

Indian coal is of drift origin, which gives it a high ash content. Its sulphur content is low. Its ash has a high fusion temperature, so 'low ash fusion temperature' is wrong. Only statements 1 and 2 hold.

• ✓ 1. The Ministry of Coal states that Indian coal, because of its drift origin, contains a higher percentage of ash than imported coal.
• ✓ 2. The Ministry of Coal states plainly that Indian coal's sulphur content is low. Burning it therefore releases less sulphur dioxide.
• ✗ 3. The Ministry of Coal describes Indian coals as high-ash coals with high ash fusion temperatures. For this reason, gasifiers with dry-ash removal suit them well. 'Low ash fusion temperature' is the opposite of the real property.
• ✗ (d) This option treats 'low ash fusion temperature' as a feature of Indian coal. It is the opposite of the real property.

Remember · Indian coal has high ash, low sulphur and a high ash fusion temperature. The Tertiary coals of the North-East are the notable exception, being high in sulphur.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (c) 1, 2 and 3 only

Cotton, groundnut and rice are sown with the onset of the monsoon (June–September) and are Kharif crops. Wheat is sown in winter and is a Rabi crop, so it is excluded.

• ✓ 1. Cotton is a Kharif crop. NCERT's table of cropping seasons lists it among the Kharif crops of the northern states.
• ✓ 2. Groundnut is largely a rainfed Kharif crop of drylands. The table of cropping seasons also lists it as a Kharif crop of the southern states.
• ✓ 3. Rice is grown in the Kharif season (June–September) in both northern and southern states.
• ✗ 4. Wheat is grown in the winter (Rabi) season, mostly under irrigation, so it is not a Kharif crop. This rules out options (a) and (d).

Remember · Kharif (June–September): rice, cotton, groundnut, maize, bajra, jowar, tur. Rabi (October–March): wheat, gram, mustard, barley. Zaid is the short summer season.

📘 Read it in NCERT: Class 12 India: People and Economy, Ch 3 (practise this chapter) · Class 12 India: People and Economy, Ch 3 (practise this chapter) · Class 12 India: People and Economy, Ch 3 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (d) Thermal power

Thermal power plants use far more water than any other industry in India. Estimates put their share at about 88% of all industrial water demand, mostly for cooling and ash handling. Engineering, paper and pulp, and textiles each use only a small share.

• ✓ (d) Thermal power plants account for about 88% of India's industrial water demand. They need large volumes for cooling and ash handling, so no other industry comes close.
• ✗ (a) Engineering ranks second among industrial users, but at only about 5% of industrial water use. That is a small fraction of the thermal power share.
• ✗ (b) Paper and pulp is water-intensive per tonne produced, but it accounts for only about 2.3% of industrial water use in total.
• ✗ (c) Textiles use water for dyeing and washing, but their share is only about 2% of industrial water use.

Remember · Agriculture is India's biggest water user overall, and all industry together accounts for only about 9% of water consumption. Within industry, thermal power plants dominate with about 88% of industrial water demand.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (d) None of the above

Contour bunding is used on sloping, rolling land. Small embankments built along the contour stop rainwater from running down the slope and washing the soil away. It is not meant for wind-swept desert margins, flat flood plains or weedy scrublands, so none of the listed situations is correct.

• ✗ (a) Desert margins suffer wind erosion, which is countered by shelterbelts and vegetative cover. Contour bunds work against erosion by water flowing down a slope.
• ✗ (b) Low flat plains near streams have little slope for bunds to act on. Their main problem is flooding, which is handled by embankments and river-control works. Contour bunds are built across slopes to hold runoff.
• ✗ (c) Weed spread is a vegetation-management problem and has nothing to do with contour bunding. Bunds intercept runoff on sloping land.
• ✓ (d) Contour bunds are earthen or loose-boulder embankments built on the contour, across the slope, to intercept runoff and conserve soil and moisture. None of options (a) to (c) describes such sloping land.

Remember · Contour bunding and contour ploughing are for sloping land and check erosion by running water. They are not for wind erosion or flat flood plains.

📘 Read it in NCERT: Class 10 Contemporary India – II, Ch 1 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (a) 1 and 3 only

Limbu (Sikkim) and Dongaria Kondh (Odisha) are correct. The Karbi are a hill tribe of Assam, not Himachal Pradesh, and the Bonda live in the Malkangiri hills of Odisha, not Tamil Nadu.

• ✓ 1. The Limbu (Limboo) are a Kirati people of Sikkim, as well as Nepal.
• ✗ 2. The Karbi are a tribe of Karbi Anglong in Assam.
• ✓ 3. The Dongaria Kondh of the Niyamgiri hills are a Particularly Vulnerable Tribal Group of Odisha.
• ✗ 4. The Bonda (Bondo) live in the Malkangiri district of Odisha.

Remember · Limbu = Sikkim; Karbi = Assam; Dongaria Kondh and Bonda = Odisha (both are PVTGs).

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 24 Oct 2026 (how we verify). Permalink · Report an error

Answer: (a) 1 only

The Narmada flows west because it follows a rift (trough-fault) valley rather than the general slope of the Peninsula. The Peninsular block tilts from north-west to south-east, which turns most drainage towards the Bay of Bengal, so the land does not slope west from Central India. Only statement 1 explains the westward flow.

• ✓ 1. The Narmada runs along a fault-controlled trough, so its course follows the rift and not the general eastward tilt of the Peninsula. This is why it is a west-flowing exception.
• ✗ 2. The Narmada does lie between the Vindhyan range in the north and the Satpura in the south. But that only describes its location. The direction of flow comes from the rift valley it occupies, not from the ranges on either side.
• ✗ 3. The Peninsular block tilted slightly from north-west to south-east. This gave most of the drainage an orientation towards the Bay of Bengal, so the land does not slope west from Central India.

Remember · Narmada and Tapi flow west through rift (trough-fault) valleys. The Peninsular block tilts north-west to south-east, so most other large rivers flow east to the Bay of Bengal.

📘 Read it in NCERT: Class 11 India: Physical Environment, Ch 3 (practise this chapter) · Class 11 India: Physical Environment, Ch 3 (practise this chapter) · Class 11 India: Physical Environment, Ch 3 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (d) None

None of the three pairs is correct. Each park has a different river from the one named. Corbett has the Ramganga, Kaziranga lies on the Brahmaputra floodplain, and Silent Valley has the Kunthipuzha.

• ✗ 1. The Ramganga is the river that flows through Corbett's valleys. The Ganga does not flow through the park. The Ramganga joins the Ganga much further downstream.
• ✗ 2. Kaziranga sits on the Brahmaputra floodplain, and the Diffalu, a Brahmaputra tributary, flows through its National Park area. The Manas river belongs to Manas National Park, a different park in Assam.
• ✗ 3. The Kunthipuzha flows through Silent Valley from north to south and joins the Bharathapuzha. This is a Kerala river system. It is not the Kaveri.

Remember · Corbett – Ramganga; Kaziranga – Brahmaputra (Diffalu inside); Manas – Manas river; Silent Valley – Kunthipuzha (a Bharathapuzha tributary). Match the park to its own river.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (a) 1 only

Only pair 1 is correct, so the answer is (a). Nokrek Biosphere Reserve lies in the Garo Hills of Meghalaya. Loktak Lake, known for its floating phumdis, lies in the Manipur valley, not in the Barail Range. Namdapha National Park is in Changlang district of eastern Arunachal Pradesh, far from the Dafla Hills.

• ✓ 1. Nokrek was designated a biosphere reserve in 1988 and is in Meghalaya. UNESCO describes Nokrek as the highest peak of the Garo Hills, at 1,412 metres.
• ✗ 2. Loktak Lake, with its floating phumdis, is in the Manipur valley. Keibul Lamjao National Park lies on the lake. The Barail Range is a separate hill range to the north and west, extending across Nagaland and Assam.
• ✗ 3. Namdapha National Park is in Changlang district of eastern Arunachal Pradesh, near the Myanmar border. It lies between the Dapha Bum ridge of the Mishmi Hills and the Patkai range. The Dafla Hills, home of the Nyishi people, are in a different region of Arunachal Pradesh, to the west.
• • Answer Only pair 1 is correctly matched. Pair 2 wrongly places Loktak in the Barail Range, and pair 3 wrongly places Namdapha in the Dafla Hills.

Remember · Nokrek BR is in the Garo Hills, Meghalaya (1988). Loktak and Keibul Lamjao are in the Manipur valley. Namdapha is in Changlang, eastern Arunachal, between the Mishmi Hills and the Patkai range. The Dafla Hills are in western Arunachal.

📘 Read it in NCERT: Class 11 India: Physical Environment, Ch 5 (practise this chapter) · Class 9 Exploration, Ch 12 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (b) Atlas Mountains North-Western Africa

The Atlas Mountains run across north-western Africa, through Morocco, Algeria and Tunisia, so pair (b) is correct. Each of the other three features lies in a different region from the one paired with it.

• ✗ (a) The Abyssinian Plateau is the highland core of Ethiopia in north-eastern Africa. It is not in Arabia.
• ✓ (b) The Atlas ranges extend more than 2,000 km across north-western Africa and form the geologic backbone of Morocco, Algeria and Tunisia.
• ✗ (c) The Guiana Highlands are a plateau and low-mountain region of South America. They lie north of the Amazon and south of the Orinoco, covering southern Venezuela, the Guianas and northern Brazil.
• ✗ (d) The Okavango is a large inland delta in north-west Botswana, in southern Africa. Its waters do not reach a sea or ocean. It has nothing to do with Patagonia in South America.

Remember · Atlas = north-western Africa (Morocco–Algeria–Tunisia). Abyssinian Plateau = Ethiopia. Guiana Highlands = northern South America. Okavango = Botswana.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (b) 2 and 3 only

Decomposers are organisms that feed on dead organic matter and break it down. In ecosystems these are mainly fungi and bacteria. Viruses cannot feed on dead matter. They multiply only inside living host cells, so they are not decomposers.

• ✗ 1. Viruses do not break down dead organic matter for energy. They replicate only by taking over a living host cell, so they have no role as decomposers in a food chain.
• ✓ 2. Fungi are among the main decomposers. They live on dead organic matter (detritus) and digest it, which makes them saprotrophs.
• ✓ 3. Bacteria are the other main decomposers. They break down dead matter and return nutrients to the soil and water.

Remember · Decomposers (saprotrophs) are mainly fungi and bacteria. They make up the detritus food chain, which begins with dead organic matter. Viruses are not decomposers, because they replicate only inside living host cells.

📘 Read it in NCERT: Class 12 Biology, Ch 12 (practise this chapter) · Class 12 Biology, Ch 7 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (c) water limits and fire

The answer is (c). Grasslands occur where rainfall is limited and often seasonal, and periodic droughts are common. Fires are also frequent. Under these conditions tree seedlings struggle to establish, while grasses recover quickly because their growing points lie at or near ground level. Succession therefore stops at the grass stage, held there by water limits and fire.

• ✗ (a) Insects and fungi are not what keep trees out of grasslands. The controlling factors are water supply and fire.
• ✗ (b) Sunlight is plentiful in open grassland, so light does not stop trees. Light competition matters under a forest canopy. Lack of nutrients is not the reason either: many grassland soils, such as prairie soils, are deep and fertile.
• ✓ (c) Periodic drought limits the establishment of trees. Recurring fire kills woody seedlings and shrubs, while grasses regrow from ground level. Without fire, shrubs and trees would take over grasslands and convert them to woodland or forest.
• ✗ (d) Option (c) gives a valid cause, so 'None of the above' cannot be right.

Remember · Grasslands are held as a stable community by limited or seasonal water and by recurring fire. Without fire, grasslands would progress to woodland or forest.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (c) Mangroves, grasslands, lakes, oceans

Mangroves are among the most productive ecosystems on Earth. Grasslands come next, then lakes and streams. Oceans come last because open-ocean productivity per unit area is very low. The order is therefore mangroves, grasslands, lakes, oceans.

• ✗ (a) This reverses the order. Oceans are the least productive of the four, and mangroves are the most productive.
• ✗ (b) Oceans cannot rank second. Open-ocean productivity (about 125 g/m²/yr) is lower than that of lakes and streams (about 250) and grasslands (about 600).
• ✓ (c) Mangroves are tidal swamp forests with primary production equal to that of tropical evergreen forests and coral reefs. Swamps and marshes average about 2,000 g/m²/yr, temperate grassland about 600, lakes and streams about 250, and open ocean about 125.
• ✗ (d) Oceans are placed first, but they are the least productive. Grasslands also rank above lakes, not below them.

Remember · Productivity falls in this order: mangroves and other swamps, then grasslands, then lakes and streams, then open ocean. Oceans cover about 70% of the Earth's surface, but their productivity per unit area is low.

📘 Read it in NCERT: Class 12 Biology, Ch 12 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (a) 1 only

A food chain shows who feeds on whom, in order, from producers upwards. It links different species at successive trophic levels, so it is not found inside one species' population. It does not record how many individuals are eaten. Only statement 1 is correct.

• ✓ 1. A food chain is a series of organisms at various biotic levels, each feeding on the one before it. For example: producer → herbivore → carnivore. Each step in the chain is a trophic level.
• ✗ 2. The members of a chain are different species at successive trophic levels: producers, herbivores and carnivores. Feeding relations run between species, not within the population of a single species.
• ✗ 3. A food chain shows only the order of feeding. The number or biomass of organisms at each trophic level is shown by ecological pyramids. These measure the standing crop as the mass of living organisms (biomass) or the number in a unit area.

Remember · A food chain shows the order of feeding between different species (producer → consumers). Numbers and biomass at each level are shown by ecological pyramids, not by the chain.

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Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (b) Ecological niche

An ecological niche covers both the physical space a species occupies and the role it plays in its community. A habitat describes only the place where the organism lives.

• ✗ (a) An ecotone is a transition zone between two ecological communities, such as a forest–grassland edge. It describes a boundary area, not an organism's role.
• ✓ (b) The niche combines where an organism lives with what it does: its food, its interactions with other species, and its position in the flow of energy. In the words of the FAO glossary, the habitat is the organism's address and the ecological niche is its profession.
• ✗ (c) Habitat is only the place or type of site where a species normally lives, such as a desert, lake or forest. It says nothing about the species' functional role. This is the most tempting wrong option.
• ✗ (d) Home range is the area an individual animal regularly moves around in for food, mating and shelter. It is a spatial idea and does not describe the organism's role in the community.

Remember · Habitat is an organism's address; niche is its profession. Niche = physical space plus functional role in the community.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (c) exists as groundwater

Answer: (c). Ice holds most of Earth's freshwater, roughly 70–78%. Groundwater holds most of the rest, roughly 22–30%. Lakes, rivers, soil moisture and the atmosphere together hold only a tiny fraction, well under 1%.

• ✗ (a) Water held in the atmosphere as vapour and clouds is a minute fraction of freshwater, far smaller than groundwater.
• ✗ (b) Freshwater lakes and rivers are visible and important, but together they hold only a tiny share of freshwater, much smaller than groundwater.
• ✓ (c) Groundwater makes up roughly 22–30% of all freshwater. That makes it by far the largest store after ice.
• ✗ (d) Soil moisture is a very small store of freshwater, far below groundwater.

Remember · Freshwater stores: ice (~70–78%) > groundwater (~22–30%) > everything else (lakes, rivers, soil moisture, atmosphere) together, well under 1%.

📘 Read it in NCERT: Class 11 Fundamentals of Physical Geography, Ch 12 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (c) 1, 3 and 5 only

Arsenic, fluoride and uranium occur naturally (geogenically) in groundwater, and all three are documented in water used for drinking in several Indian states. Sorbitol, a sugar alcohol, and formaldehyde, a preservative and industrial chemical, are not among the contaminants documented in India's drinking-water sources. So 1, 3 and 5 are correct.

• ✓ 1. Arsenic is found in groundwater in parts of West Bengal and Bihar. NCERT links its rising concentration there to over-withdrawal of groundwater.
• ✗ 2. Sorbitol is a sugar alcohol used as a sweetener. It is not reported as a contaminant of Indian drinking-water sources.
• ✓ 3. Over-withdrawal of groundwater has increased fluoride concentration in states such as Rajasthan and Maharashtra.
• ✗ 4. Formaldehyde is a preservative and industrial chemical, not a geogenic pollutant. It is not among the reported groundwater or drinking-water contaminants of India.
• ✓ 5. The Ministry of Jal Shakti reports uranium above 30 micrograms per litre, the WHO provisional guideline, in localised pockets of a few States/UTs. Punjab is the best-known case.

Remember · Geogenic drinking-water contaminants in India include arsenic (West Bengal, Bihar), fluoride (Rajasthan, Maharashtra and others) and uranium (localised pockets, notably Punjab), along with nitrate, iron and salinity. Sorbitol and formaldehyde are not on this list.

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Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (b) 1, 2, 3, 5 and 6 only

Computers contain the heavy metals beryllium, cadmium, chromium (VI), mercury and lead, and these escape into the environment when old machines are dumped or crudely recycled. Heptachlor is an organochlorine pesticide and plutonium is a radioactive nuclear material. Neither is a computer component. So the answer is (b), and options (a), (c) and (d) are wrong.

• ✓ 1. Beryllium is present in computers. Copper-beryllium alloys are used in electronic connectors that must withstand repeated connection and disconnection.
• ✓ 2. Cadmium is a heavy metal of concern in e-waste. It is found in components such as rechargeable nickel-cadmium batteries.
• ✓ 3. Hexavalent chromium (chromium VI) is used in corrosion-protective coatings on metal parts. It is listed among the heavy metals of concern in e-waste.
• ✗ 4. Heptachlor is an organochlorine pesticide. It is not a constituent of computers or their parts.
• ✓ 5. Mercury is a heavy metal of concern in e-waste. It is found in the backlights of older LCD displays, in switches and in some batteries.
• ✓ 6. Lead is a heavy metal of concern in e-waste. It is used in the solder on circuit boards and in the glass of CRT monitors.
• ✗ 7. Plutonium is a radioactive element used in nuclear reactors and weapons. It is not a component of computers.

Remember · Computer e-waste carries lead, mercury, cadmium, chromium (VI), beryllium and brominated flame retardants. Pesticides like heptachlor and radioactive plutonium are not e-waste constituents.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (d) nitrous oxide and sulphur dioxide

Acid rain forms when sulphur dioxide and oxides of nitrogen are released into the air. These gases react with water and oxygen to form sulphuric and nitric acids, which fall as acidic rain. Option (d) is the only one that pairs sulphur dioxide with an oxide of nitrogen.

• ✗ (a) Carbon dioxide is a greenhouse gas. It makes even clean rain only slightly acidic (carbonic acid), not acid rain. Nitrogen gas (N2) is largely inert and does not cause acid rain.
• ✗ (b) Carbon monoxide is a toxic gas from incomplete combustion. Neither it nor carbon dioxide produces the strong acids behind acid rain.
• ✗ (c) Ozone near the ground is a pollutant and a component of smog, and carbon dioxide is a greenhouse gas. Neither is a major acid-rain precursor.
• ✓ (d) Sulphur dioxide and oxides of nitrogen are the pollutants that cause acid rain. They form sulphuric and nitric acids in the atmosphere. This is the only option naming sulphur dioxide together with an oxide of nitrogen.

Remember · Acid rain = SO2 + NOx (mainly from burning fossil fuels) forming sulphuric and nitric acids. Rain with pH below 5.6 is called acid rain.

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Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (a) NO2, O3 and peroxyacetyl nitrate in the presence of sunlight

Photochemical smog forms when sunlight drives reactions between nitrogen oxides (such as NO2) and volatile organic compounds. This produces ozone and peroxyacetyl nitrate (PAN), along with other oxidants. Option (a) is the only one that names NO2, O3 and PAN together with sunlight.

• ✓ (a) Sunlight acts on nitrogen oxides and hydrocarbons (VOCs) to give ozone (O3) and PAN. NO2, O3 and PAN in the presence of sunlight therefore describe photochemical smog.
• ✗ (b) Carbon monoxide and ordinary O2 are not the key ingredients. The smog-forming precursors are nitrogen oxides and VOCs, which react under sunlight to give ozone and PAN.
• ✗ (c) CO, CO2 and NO2 at low temperature do not describe the process. Photochemical smog needs sunlight and is typically a problem of hot, sunny days.
• ✗ (d) The reaction is photochemical, so it needs sunlight. It builds up during the day, not in the evening.

Remember · Photochemical smog = NOx + VOCs + sunlight, giving ground-level ozone and PAN. It forms on sunny days and is an oxidising smog, unlike sulphurous (classical) smog.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (c) moulds

Aflatoxins are mycotoxins, which are poisons made by fungi. They are produced by moulds of the genus Aspergillus, mainly A. flavus and A. parasiticus. These moulds grow on grains and oilseeds that are stored damp or handled badly.

• ✓ (c) Aflatoxins are produced by the moulds Aspergillus flavus and Aspergillus parasiticus, which grow in soil, decaying vegetation, hay and grains. Contamination can happen before and after harvest. The toxins are not destroyed by normal cooking.
• ✗ (a) Bacteria can spoil stored food, but they do not make aflatoxins. A mycotoxin is, by definition, a toxin from a fungus such as a mould.
• ✗ (b) Protozoa are single-celled, animal-like organisms. Some cause diseases such as malaria and amoebiasis, but they do not produce aflatoxins.
• ✗ (d) Viruses can multiply only inside living host cells. They cannot grow on stored grain, and they do not produce aflatoxins.

Remember · Aflatoxins are mycotoxins made by Aspergillus moulds (A. flavus, A. parasiticus) on stored grains, groundnuts and spices. They damage the liver, can cause liver cancer, and survive normal cooking.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (c) 1 and 3 only

Bagasse, the fibre left after crushing cane, is burnt as fuel to raise steam and generate power. Molasses is fermented into ethanol. Synthetic chemical fertilisers such as urea are made from fossil feedstocks like natural gas, not molasses. So only statements 1 and 3 are correct.

• ✓ 1. Sugar mills burn bagasse as boiler fuel to generate steam and electricity. Surplus power from such cogeneration can be supplied to the grid. This makes bagasse a biomass fuel for energy generation.
• ✗ 2. Synthetic nitrogen fertilisers like urea are made from ammonia, which is produced from fossil feedstocks. In India these are mainly natural gas, with naphtha and fuel oil in some plants. Gas is pooled and supplied to fertiliser plants for urea production. Molasses is not a feedstock for synthetic fertilisers.
• ✓ 3. Molasses is fermented to give alcohol (ethanol). India's molasses-based distilleries are a major source of ethanol for petrol blending.

Remember · Bagasse gives fuel for steam and power. Molasses gives ethanol. Synthetic fertilisers like urea use natural gas or other fossil feedstocks, not molasses.

📘 Read it in NCERT: Class 10 Science, Ch 4 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (c) 1, 2 and 3

Answer (c): all three are threatened with extinction. The gharial and the leatherback turtle were in the IUCN's highest threat class, Critically Endangered, at the time. The swamp deer is a globally threatened species (IUCN: Vulnerable). All three are in Schedule I of the Wild Life (Protection) Act, 1972, which gives the highest legal protection.

• ✓ 1. The gharial (Gavialis gangeticus) is listed as Critically Endangered on the IUCN Red List, a status it has held since 2007. It is also a Schedule I species under the Wild Life (Protection) Act, 1972.
• ✓ 2. The leatherback (leathery) turtle, Dermochelys coriacea, is a Schedule I species in India. It was classed as Critically Endangered by the IUCN before its 2013 global reassessment.
• ✓ 3. The swamp deer (barasingha, Cervus duvaucelii) is listed in Schedule I in India, covering all its sub-species. The IUCN classes it as Vulnerable, a threatened category. UNESCO's Kaziranga World Heritage page lists the eastern swamp deer among the park's globally threatened species.
• • Since then The IUCN's 2013 reassessment moved the leatherback turtle to 'Vulnerable' (criteria A2bd) globally. The gharial remains Critically Endangered.

Remember · Gharial: Critically Endangered (IUCN). Leatherback: Critically Endangered until its 2013 reassessment. Swamp deer: Vulnerable. All three are threatened and in Schedule I in India, so 'endangered' fits each one.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (a) 1, 2 and 3 only

The Indian star tortoise, the Bengal monitor lizard and the pygmy hog all occur naturally in India. Spider monkeys are New World primates of Central and South America, so they are not native to India. That leaves 1, 2 and 3 only.

• ✓ 1. The star tortoise (Geochelone elegans) is native to India. Its range covers Gujarat, western Rajasthan and Madhya Pradesh, and in the south Kerala, Karnataka, eastern Andhra Pradesh, Orissa and Tamil Nadu. It also extends into Pakistan (Sindh) and Sri Lanka.
• ✓ 2. The Bengal monitor lizard (Varanus bengalensis) is native to India. It is listed among the protected wildlife under the Wild Life (Protection) Act, 1972.
• ✓ 3. The pygmy hog (Porcula salvania) is the world's smallest wild pig. It survives in the grasslands of Assam, and captive-bred hogs have been released in Manas National Park.
• ✗ 4. Spider monkeys live in forests from southern Mexico through Central and South America to Brazil. No spider monkey species is native to India. This rules out option (d). Option (c) is also wrong: it includes the spider monkey and leaves out the monitor lizard and the pygmy hog.

Remember · The spider monkey is a New World (American) primate. India's native primates include macaques, langurs and the hoolock gibbon. The star tortoise, Bengal monitor and pygmy hog are native Indian species.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (b) 1 and 3 only

Answer: (b) 1 and 3 only. Sea cows (dugongs and manatees) and sea lions are warm-blooded marine mammals. The sea horse is a bony fish that breathes through gills.

• ✓ 1. 'Sea cow' is the common name of the dugong and the manatees, order Sirenia, class Mammalia. They live wholly in water but are mammals, like whales, dolphins and seals.
• ✗ 2. The sea horse (genus Hippocampus) belongs to the fish family Syngnathidae, along with the pipefishes. Despite its horse-like head, it is a fish that breathes through gills, not a mammal.
• ✓ 3. Sea lions belong to the pinnipeds ('fin- or flipper-footed'), the group of marine mammals that also includes seals. They feed in the sea but come ashore to rest and breed.

Remember · Names mislead here: 'sea cow' (dugong, manatee) and 'sea lion' are mammals, but 'sea horse' is a fish.

📘 Read it in NCERT: Class 12 Biology, Ch 6 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (b) 2 only

Only Nostoc is used as a biofertiliser. It is a nitrogen-fixing cyanobacterium, and cyanobacteria serve as an important biofertiliser in paddy fields. Agaricus is a mushroom grown as food, and Spirogyra is a filamentous green alga that is not used as a biofertiliser.

• ✗ 1. Agaricus includes the white button mushroom (Agaricus bisporus), a Basidiomycete fungus cultivated as food. It is not used as a biofertiliser.
• ✓ 2. Nostoc is a cyanobacterium that can fix atmospheric nitrogen. In paddy fields, cyanobacteria serve as an important biofertiliser.
• ✗ 3. Spirogyra is a filamentous green alga belonging to Thallophyta. It does not fix atmospheric nitrogen and is not used as a biofertiliser.

Remember · Biofertilisers come from nitrogen-fixing bacteria (Rhizobium, Azotobacter), fungi (mycorrhiza) and cyanobacteria (Nostoc, Anabaena). Mushrooms such as Agaricus are grown as food, and Spirogyra is an ordinary green alga.

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Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (a) 1, 2 and 3 only

The lion-tailed macaque (Macaca silenus) is found only in India and is endemic to the Western Ghats. Its native range is limited to Karnataka, Kerala and Tamil Nadu. Andhra Pradesh is not part of its natural range, so the answer is 1, 2 and 3 only.

• ✓ 1. Tamil Nadu is within the native range. The species occurs in the state's Western Ghats forests.
• ✓ 2. Kerala is within the native range, in the Western Ghats forests.
• ✓ 3. Karnataka is within the native range, in the Western Ghats forests of the state.
• ✗ 4. Andhra Pradesh is not among the states where the species is native. The macaque is a Western Ghats rainforest species and does not occur there naturally.
• ✗ (b) Kerala alone is too narrow, because the species also occurs naturally in Karnataka and Tamil Nadu.
• ✗ (d) Including Andhra Pradesh is wrong, because it lies outside the species' Western Ghats range.

Remember · Lion-tailed macaque: endangered and endemic to the Western Ghats of Karnataka, Kerala and Tamil Nadu only. It is not found in Andhra Pradesh.

📘 Read it in NCERT: Class 9 Exploration, Ch 12 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (d) 1, 2 and 3

Mycorrhiza refers to a mutually beneficial partnership in which fungi live in association with the roots of higher plants. The fungal hyphae extend the root's absorbing surface and help the plant take up water and nutrients. The association also makes plants more tolerant of drought and of adverse soil conditions such as low pH, and more resistant to root-borne pathogens. All three statements are correct, which is why mycorrhizal inoculation is used to revegetate degraded sites.

• ✓ 1. Plants with mycorrhizal associations show tolerance to drought. The fungus helps the plant absorb essential nutrients from the soil, and its hyphae add to the absorbing surface of the root system.
• ✓ 2. Arbuscular mycorrhizal fungi help host plants resist stresses such as low soil pH, toxic elements and extreme temperatures. This is why they are used to rehabilitate disturbed land, such as mine spoils.
• ✓ 3. Resistance to root-borne pathogens is one of the benefits plants gain from mycorrhizal association.

Remember · Mycorrhiza (a fungus–root symbiosis, e.g. Glomus) improves phosphorus and water uptake. It also gives tolerance to drought, salinity and pH stress, and resistance to root pathogens, which makes it useful for restoring degraded land.

📘 Read it in NCERT: Class 12 Biology, Ch 8 (practise this chapter) · Class 12 Biology, Ch 11 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (d) 1, 2 and 3

Recombinant DNA technology moves chosen genes from one organism into another, even between unrelated species. The donor can be a plant, an animal or a microbe, and the recipient can be a plant or an animal. So all three transfers are possible.

• ✓ 1. Selected genes can be moved from one organism into another, including between species. A gene from one plant species can therefore be placed in a different plant species.
• ✓ 2. The technology works across non-related species, so a gene from an animal can be inserted into a plant. Gene origin is not limited to plants.
• ✓ 3. The Bt toxin gene from the bacterium Bacillus thuringiensis has been cloned and expressed in plants such as cotton to give insect resistance. This is a transfer from a microorganism to a higher organism.

Remember · Genetic engineering is not limited by species barriers. Genes can move between unrelated organisms, such as bacteria to plants (Bt cotton) or animals to plants.

📘 Read it in NCERT: Class 12 Biology, Ch 10 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (d) 1, 2 and 3

All three minerals are needed. Calcium and sodium act in the signalling that triggers a muscle to contract. Iron is needed to make myoglobin, the muscle protein that stores the oxygen muscles use to produce energy for contraction.

• ✓ 1. Calcium is needed for squeezing and relaxing muscles. Calcium ions released inside muscle cells trigger the contraction.
• ✓ 2. The body needs iron to make myoglobin, the oxygen-carrying protein found in muscles. Myoglobin holds oxygen that muscle cells use to produce the energy for contraction.
• ✓ 3. Sodium acts like a chemical battery that powers nerve impulses and muscle contractions. Sodium rushing into a muscle cell creates the electrical impulse that sets off contraction.

Remember · Muscle contraction needs calcium (the trigger), sodium (the electrical signal) and iron (myoglobin for oxygen). Hence all three minerals are required.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (a) 1 only

Viruses are obligate intracellular parasites. They have no energy-generating machinery of their own and borrow the host cell's, so statement 1 is correct. For the same reason they replicate only inside living cells and cannot be grown in a lifeless synthetic medium. They also spread by air, contact, blood and other routes, not only through biological vectors.

• ✓ 1. A virus depends wholly on the host cell's machinery and metabolism, including its energy supply. It has no energy-generating enzyme system of its own.
• ✗ 2. Viruses can replicate only in living cells, so laboratories grow them in cell cultures (and in living hosts such as eggs or animals). A cell-free synthetic medium cannot support them, unlike many bacteria.
• ✗ 3. Vectors are only one route. HIV spreads through sexual contact, contaminated blood and needles, and from mother to child. The common cold virus spreads through droplets and shared utensils. None of these needs a biological vector.
• ✗ (c) This option pairs the correct statement 1 with the wrong statement 3, which says vectors are the only mode of transmission.
• ✗ (d) Statements 2 and 3 are both wrong, so all three cannot be correct.

Remember · Viruses are obligate intracellular parasites. They have no metabolism or energy machinery of their own, grow only in living cells, and spread by many routes, not only vectors.

📘 Read it in NCERT: Class 12 Biology, Ch 7 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (b) 2 and 3 only

Tattooing pierces the skin with a needle that can carry a previous client's blood. Hepatitis B and HIV are blood-borne viruses, so both can pass this way if equipment is shared or not sterilised. Chikungunya is a mosquito-borne disease spread by the bites of infected Aedes mosquitoes, not by blood contact through tattoo needles.

• ✗ 1. Chikungunya virus is transmitted by infected female mosquitoes, most commonly Aedes aegypti and Aedes albopictus. It is a vector-borne disease, not one passed between people through tattoo needles.
• ✓ 2. WHO lists tattooing and piercing among the ways hepatitis B spreads, along with needlestick injury and exposure to infected blood and body fluids.
• ✓ 3. HIV spreads through infected blood on contaminated needles and through procedures involving unsterile cutting or piercing of the skin. A tattoo needle reused without sterilisation fits this route.
• ✗ (d) Option (d) wrongly includes chikungunya, a vector-borne disease spread by mosquito bites rather than by blood contact.

Remember · Tattooing, piercing and shared needles can spread blood-borne viruses such as hepatitis B, hepatitis C and HIV. Mosquito-borne diseases such as chikungunya and dengue spread through the bites of infected mosquitoes.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (c) 1, 2 and 4

Phenomena 1, 2 and 4 are apparent effects: what we see differs from the real object, because of the atmosphere or the way the brain judges size. The Moon at dawn and the Pole Star are real objects that are actually there to be seen, so 3 and 5 are not illusions.

• ✓ 1. The Sun's disc is no bigger near the horizon than high in the sky; it only looks bigger. Photographs prove the Moon is the same width near the horizon as when it is high up, yet our eyes see it as larger. The same horizon illusion makes the setting Sun look bigger.
• ✓ 2. The Sun looks red or orange at dawn because its light travels a long path through the air and is scattered. The Sun's real colour does not change, only its appearance.
• ✗ 3. At certain phases the Moon is really above the horizon at dawn and can be seen. This is a real sighting, not a false appearance.
• ✓ 4. Twinkling is caused by atmospheric refraction of starlight. As the light passes through moving layers of air it is bent unevenly, so the star's apparent position and brightness keep changing, though the star itself is not flickering.
• ✗ 5. Polaris is a real star that stays nearly fixed in the northern sky, so it is actually seen from the northern hemisphere. Nothing about its appearance is false.

Remember · The Sun's apparent size and colour at the horizon and the twinkling of stars are appearances caused by perception and the atmosphere. Seeing the Moon or the Pole Star is plain visibility.

📘 Read it in NCERT: Class 10 Science, Ch 10 (practise this chapter) · Class 10 Science, Ch 10 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (a) 1 only

The Higgs boson is the particle linked to the Higgs field, which gives mass to elementary particles. Finding it confirmed the theory of how particles get mass. It has no link to teleportation or to fuels for nuclear fission. Only statement 1 is correct, so the answer is (a).

• ✓ 1. Elementary particles gain mass by interacting with the Higgs field. The Higgs boson is an excitation of that field, so its discovery confirmed this mass-giving mechanism. The 2013 Nobel Prize in Physics honoured the theory of this mechanism, which was confirmed through the discovery of the predicted particle.
• ✗ 2. Moving matter from one point to another without crossing the space between them (teleportation) has nothing to do with the Higgs boson. The discovery explains the origin of mass and offers no such technology.
• ✗ 3. Fission fuels such as uranium-235 and plutonium-239 are used because their nuclei can be split to release energy. The Higgs boson concerns the origin of mass of elementary particles and does not lead to better fission fuels.

Remember · The Higgs boson (discovery announced at CERN's LHC on 4 July 2012) confirms the Higgs field, which gives elementary particles their mass. It has no practical link to teleportation or nuclear fuels.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (c) rate of respiration is decreased

Harvested fruits are still alive and keep respiring, which uses up their stored food and drives ripening. Low temperature slows this enzyme-driven metabolism, so respiration falls, ripening is delayed and the fruit stays fresh longer.

• ✓ (c) Cold slows the fruit's metabolism and the growth of spoilage microbes. Reserves are conserved at a lower respiration rate and ripening is retarded, which extends storage life.
• ✗ (a) Darkness is not the reason. Lowering the temperature is what prolongs the life of the fruit, and a cold chamber is not defined by the absence of sunlight.
• ✗ (b) A plain cold chamber does not raise carbon dioxide. Altering the gas mix is the basis of controlled- or modified-atmosphere storage, which is a separate technique from refrigeration.
• ✗ (d) Cold stores manage humidity mainly to limit water loss from the produce. Humidity is not the cause of the longer shelf life. That comes from the lower temperature and the slower respiration it brings.

Remember · Cold storage works by slowing the respiration and metabolism of harvested produce, which delays ripening and spoilage. Temperature control is the main tool for extending post-harvest life.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (c) the effective area of contact between the wheel and axle is reduced

Ball bearings place small hard balls between the wheel (hub) and the axle, so the surfaces roll over each other instead of sliding. The balls touch the surfaces only at tiny points, so the effective area of contact is reduced. Friction falls and the parts wear out more slowly.

• ✓ (c) Rolling balls touch the surfaces only at tiny points, so the effective area of contact is reduced. The frictional resistance of sliding is largely replaced by the much smaller resistance of rolling.
• ✗ (b) Ball bearings are fitted to cut friction and wear. Increasing the effective contact area is the opposite of what they do.
• ✗ (a) The balls do not enlarge the contact between wheel and axle. They change sliding into rolling, which lowers resistance.
• ✗ (d) Option (c) correctly states the reason, so this option is wrong.

Remember · Ball bearings replace sliding with rolling. The balls touch only at small points, which reduces the effective contact area and friction. This is why they are used in cycles, fans and vehicles.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (d) 1, 2 and 3

Each raindrop works like a tiny prism. Sunlight refracts as it enters the drop and splits into colours (dispersion). It then reflects off the back of the drop (internal reflection) and refracts again as it leaves. All three phenomena are involved.

• ✓ 1. Different colours bend by different amounts inside the drop, so white sunlight splits into its component colours. This splitting is dispersion.
• ✓ 2. Light is refracted when it enters the raindrop and refracted again when it leaves.
• ✓ 3. Between the two refractions, the dispersed light reflects from the inner back surface of the drop. This sends it back towards the observer.
• ✗ (a) It leaves out internal reflection, which turns the light back towards the observer.
• ✗ (b) It leaves out dispersion, which produces the colours.
• ✗ (c) It leaves out refraction, which bends the light at both surfaces of the drop.

Remember · Rainbow = refraction + dispersion + internal reflection (then refraction again) in raindrops. It always forms opposite to the Sun.

📘 Read it in NCERT: Class 10 Science, Ch 10 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (c) most of the root hairs are lost during transplantation

Root hairs absorb most of a seedling's water and minerals. When a seedling is lifted and moved, these fine, delicate hairs are torn off. The seedling then cannot take up enough water in its new place, so it wilts and may fail to grow.

• ✓ (c) Root hairs increase the root's surface area for absorbing water and minerals from the soil. Lifting and handling seedlings tears off root hairs, so water uptake drops sharply until new hairs form.
• ✗ (a) Poor minerals in the new soil is not the reason transplants commonly fail. The real problem is that the damaged roots cannot absorb water, whatever the soil.
• ✗ (b) Root hairs work by staying in close contact with soil particles to absorb water. Gripping the soil 'too hard' is not a cause of transplant failure.
• ✗ (d) Leaves may get bruised, but this is not the main reason seedlings fail. Leaves do not take up water from the soil. Gardeners often trim some leaves to reduce water loss while the roots recover.

Remember · Root hairs absorb water and minerals. Many are lost when a seedling is uprooted, so transplants wilt. Hence seedlings are moved with a ball of soil around the roots.

📘 Read it in NCERT: Class 9 Exploration, Ch 3 (practise this chapter)

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error

Answer: (a) Gravity is the strongest of the four

Gravity is the weakest of the four fundamental forces, not the strongest; the strong nuclear force is the strongest. So statement (a) is the incorrect one.

• ✓ (a) This statement is wrong, so it is the answer. The strong force is the strongest of the four fundamental interactions. Gravity is the weakest, although its range is infinite.
• ✗ (b) This statement is true, so it is not the answer. Electromagnetism is the force that acts between electrically charged particles. It covers both electricity and magnetism.
• ✗ (c) This statement is true, so it is not the answer. The weak force can turn a down quark into an up quark, changing a neutron into a proton. This process occurs in radioactive decay, when atoms spontaneously shed energy and subatomic particles.
• ✗ (d) This statement is true, so it is not the answer. At the level of the atomic nucleus, the strong force holds protons and neutrons together.

Remember · Order of strength: strong > electromagnetic > weak > gravity. Gravity is the weakest but has infinite range. The weak force drives radioactive (beta) decay, and the strong force binds the nucleus.

Question: UPSC Civil Services (Preliminary) 2013, General Studies Paper I. Explanation: Minimalist IAS, checked 25 Oct 2026 (how we verify). Permalink · Report an error