Ships from which of the following countries have to cross the Strait of Hormuz to reach out to the Indian Ocean?
1.Bahrain
2.Syria
3.Qatar
4.Egypt
Select the answer using the code given below:
Answer & explanation▾
Answer: (b) 1 and 3
The Strait of Hormuz, between Iran and Oman, is the only sea exit from the Persian Gulf to the Gulf of Oman and the Arabian Sea. Bahrain and Qatar have coasts only on the Persian Gulf, so their ships must pass through it. Syria and Egypt lie on the Mediterranean (and Egypt also on the Red Sea), so they reach the Indian Ocean via Suez and Bab-el-Mandeb instead.
✓1.Bahrain is an island state inside the Persian Gulf, so every voyage to the Indian Ocean passes through Hormuz.
✗2.Syria's coast is on the Mediterranean; its ships reach the Indian Ocean through the Suez Canal and the Red Sea.
✓3.Qatar is a peninsula on the western shore of the Persian Gulf; its LNG and oil exports leave through Hormuz.
✗4.Egypt has Mediterranean and Red Sea coasts, so its ships sail down the Red Sea and out through Bab-el-Mandeb.
Remember · Persian Gulf states needing Hormuz: Iraq, Kuwait, Bahrain, Qatar (plus most of Saudi, UAE and Iranian ports). Red Sea exit = Bab-el-Mandeb.
Question and answer: UPSC's provisional GS Paper I (2026, Series A) —
paper ↗ · answer key ↗.
Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). Permalink ·
Tungurahua Volcano, which was declared a Global Geopark by UNESCO in 2025, is situated in which one among the following countries?
Answer & explanation▾
Answer: (a) Ecuador
Tungurahua is an active stratovolcano in the Ecuadorian Andes, near the town of Baños. UNESCO designated the Tungurahua Volcano UNESCO Global Geopark, covering about 239,700 hectares, in 2025, with Ecuador as the country.
✓(a)UNESCO lists the geopark as located in the Ecuadorian Andes, designated in 2025, country Ecuador.
✗(b)Peru's volcanic landmarks such as Misti and Sabancaya lie in the southern Andes; Tungurahua is not among them.
✗(d)Colombia's active volcanoes include Nevado del Ruiz and Galeras; Tungurahua lies south of the border, in central Ecuador.
Remember · Tungurahua ('throat of fire'): active volcano in the Ecuadorian Andes; UNESCO Global Geopark since 2025, next to Sangay and Llanganates National Parks.
Sources
UNESCO, Tungurahua Volcano UNESCO Global Geopark ↗“Located in the Ecuadorian Andes, Tungurahua Volcano UNESCO Global Geopark displays a geological history spanning over 417 million years, shaped by volcanic eruptions, tectonic uplift, and glacial activity. … Characteristics Designation date 2025 Country(ies) Ecuador Transnational No Area (ha) 239,700”
Question and answer: UPSC's provisional GS Paper I (2026, Series A) —
paper ↗ · answer key ↗.
Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). Permalink ·
Which of the following statements with reference to Lake Turkana is/are correct?
1.It is the largest desert lake in the world.
2.The lake is situated in South Sudan along the eastern fringe of the Sahara desert.
3.The lake is listed as a UNESCO World Heritage Site and is also referred to as the ‘Jade Sea’.
Select the answer using the code given below:
Answer & explanation▾
Answer: (b) 1 and 3 only
Lake Turkana is the world's largest desert lake and a UNESCO World Heritage property nicknamed the Jade Sea for its colour. It lies in the Rift Valley of northern Kenya, reaching up to the Ethiopian border, not in South Sudan.
✓1.UNESCO describes Lake Turkana as the largest desert lake in the world and the most saline lake in East Africa.
✗2.The lake is in Kenya, in the Rift Valley, and extends north to the Ethiopian border. South Sudan is not involved, and it is not a Sahara-fringe lake.
✓3.Lake Turkana National Parks, in Kenya, were inscribed on the World Heritage List in 1997. UNESCO notes the lake is fondly called the Jade Sea because of its colour.
Remember · Lake Turkana (Kenya, Rift Valley, to the Ethiopian border): largest desert lake in the world; Lake Turkana National Parks inscribed by UNESCO in 1997; called the Jade Sea.
Sources
UNESCO World Heritage Centre: Lake Turkana National Parks ↗“The Lake is the most saline lake in East Africa and the largest desert lake in the world, surrounded by an arid, seemingly extraterrestrial landscape that is often devoid of life. … The long body of Lake Turkana drops down along the Rift Valley from the Ethiopian border, extending 249 kilometers from north to south and 44 km at its widest point with a depth of 30 meters. … It is Africa's fourth largest lake, fondly called the Jade Sea because of its breathtaking color. … The property is co-managed by Kenya Wildlife Service (KWS) and the National Museums of Kenya (NMK).”
Question and answer: UPSC's provisional GS Paper I (2026, Series A) —
paper ↗ · answer key ↗.
Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). Permalink ·
Consider the following statements about river bridges connecting India with neighbouring countries:
1.‘Maitri Setu’, built over Feni river, connects Ramgarh in India with Sabroom in Bangladesh.
2.Jhulaghat suspension bridge connects India with Myanmar.
3.Mechi bridge and its approaches connect Panitanki Bypass in India with Kakarvitta in Nepal.
Which of the statements given above is/are correct?
Answer & explanation▾
Answer: (d) 3 only
Only statement 3 is right. Maitri Setu joins Sabroom in Tripura (India) with Ramgarh (Bangladesh), the reverse of what statement 1 says. The Jhulaghat bridge on the Kali river leads into Nepal, not Myanmar.
✗1.Sabroom lies in South Tripura, India, and Ramgarh is on the Bangladesh side; the statement swaps the two countries.
✗2.Jhulaghat is a town on the Indo-Nepal border named after a hanging bridge on the Kali river, through which one enters Nepal.
✓3.The Mechi bridge is part of the upgraded Kakarvitta (Nepal) to Panitanki Bypass (India) road on NH 327B, and is the end point of Asian Highway 02 in India.
Remember · Maitri Setu: Sabroom (Tripura, India) – Ramgarh (Bangladesh) over the Feni. Jhulaghat (Pithoragarh) and the Mechi bridge (Panitanki–Kakarvitta) both lead into Nepal.
Question and answer: UPSC's provisional GS Paper I (2026, Series A) —
paper ↗ · answer key ↗.
Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). Permalink ·
Andes mountains pass through how many of the above countries?
Answer & explanation▾
Answer: (c) Only four
The Andes run along South America's western side through seven countries: Venezuela, Colombia, Ecuador, Peru, Bolivia, Chile and Argentina. From the list, Bolivia, Colombia, Ecuador and Venezuela lie on the chain; Brazil and Paraguay lie wholly to the east.
✓IBolivia is one of the countries with large portions of the Tropical Andes.
✗IIBrazil is not one of the Andean countries; it lies east of the chain, in the Amazon basin and the Brazilian Highlands.
✓IIIColombia includes large portions of the Tropical Andes; the northern Andes split into several ranges (cordilleras) there.
✓IVEcuador includes large portions of the Tropical Andes; its Andean cordilleras carry volcanoes such as Chimborazo and Cotopaxi.
✗VParaguay is a landlocked lowland country of the Paraná–Paraguay basin and the Gran Chaco, with no Andean ranges.
✓VIThe Andes hotspot extends from western Venezuela, where the northernmost Andes (the Venezuelan or Caribbean cordillera) lie.
Remember · Andes countries (7), north to south: Venezuela, Colombia, Ecuador, Peru, Bolivia, Chile, Argentina. Not Brazil, Paraguay, Uruguay or the Guianas.
Question and answer: UPSC's official GS Paper I (2025, Series A) —
paper ↗ · answer key ↗.
Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). Permalink ·
UPSC's key is none. Tonlé Sap, in Cambodia, lies at about 12.8°N (UNESCO). Lake Tanganyika lies along the borders of Tanzania, the DRC, Burundi and Zambia, and Burundi, one of its shore countries, lies south of the equator. Patos Lagoon is in Rio Grande do Sul, in the extreme south-east of Brazil.
✗ILake Tanganyika occupies the southern end of the Western Rift Valley, with ports at Bujumbura in Burundi, Kalemie in the DRC, Mpulungu in Zambia, and Ujiji and Kigoma in Tanzania. UPSC's official key treats the equator as not passing through it; we could not confirm its latitude from an official source, so we do not explain it here.
✗IIUNESCO gives Tonlé Sap's latitude as 12.8135 (north), in Cambodia.
✗IIIPatos Lagoon lies in Rio Grande do Sul, in the extreme south-east of Brazil; it is the largest lagoon in Brazil. UPSC's official key treats the equator as not passing through it.
Remember · Tonlé Sap ≈ 12.8°N (Cambodia). Lake Tanganyika: rift lake on the Tanzania, DRC, Burundi and Zambia borders. Patos Lagoon: Rio Grande do Sul, extreme south-east Brazil.
Encyclopaedia Britannica: Lake Tanganyika ↗ · reference work“forms the boundary between Tanzania and the Democratic Republic of the Congo (DRC) and part of the boundary between Burundi and the DRC as well as part of the boundary between Tanzania and Zambia . … Important ports situated along Lake Tanganyika are Bujumbura in Burundi, Kalemie in the DRC, Mpulungu in Zambia, and Ujiji and Kigoma in Tanzania.”
Encyclopaedia Britannica: Patos Lagoon ↗ · reference work“Patos Lagoon , shallow lagoon in Rio Grande do Sul estado (state), extreme southeastern Brazil . It is the largest lagoon in Brazil and the second largest in South America .”
How many of the above countries have more than four time zones?
Answer & explanation▾
Answer: (b) Only four
UPSC's official answer: (b) · the answer UPSC accepted, and the one that counts in the exam
Also defensible: (c)
Brazil is the clear exclusion: its legal time uses exactly four zones, 'UTC - 5 hours UTC - 4 hours UTC - 3 hours UTC - 2 hours', so it does not have more than four.
UPSC's (b) counts the other four with their overseas territories: the United Kingdom's Overseas Territories span 'nine time zones'; Australia has three mainland zones plus Norfolk Island (UTC+11), Christmas Island (UTC+7) and the Cocos Islands (UTC+6:30); New Zealand has its mainland, the Chatham Islands '45 minutes ahead', Tokelau, and the Cook Islands and Niue; Denmark has its mainland, the Faroe Islands and Greenland's three zones.
Counted strictly by distinct standard offsets, Denmark falls short: UTC+1 (Denmark), UTC+0 (shared by the Faroe Islands and Danmarkshavn), UTC-2 (most of Greenland since 2023) and UTC-4 (Pituffik) make four, not more. That leaves the United Kingdom, Australia and New Zealand: three, option (c).
New Zealand's own count depends on the Cook Islands and Niue, each 'a self-governing state in free association with New Zealand' rather than part of it; without them New Zealand has UTC+12, UTC+12:45 and Tokelau's UTC+13, and only two countries remain (d). The item turns on the counting convention.
UPSC's key is (b), on the usual tally that counts overseas territories and associated states; by distinct standard offsets Denmark has four and New Zealand three, which gives (c) or even (d). In the exam, use the common tally with territories, as UPSC does.
This box is Minimalist IAS's analysis, with its sources; it does not change UPSC's answer.
Counted with overseas territories and associated states, as the usual tally does, four of the five countries have more than four time zones: the United Kingdom (its Overseas Territories span nine zones), Australia (three mainland zones plus Norfolk, Christmas and Cocos Islands at the least), New Zealand (mainland, the Chatham Islands, Tokelau, and the associated Cook Islands and Niue) and Denmark (mainland, the Faroe Islands and Greenland's three zones). Brazil's legal time uses exactly four zones, UTC-5 to UTC-2, so it does not exceed four: (b).
✓IThe House of Commons Foreign Affairs Committee notes that the British Overseas Territories are spread across nine time zones, so the United Kingdom exceeds four zones once its territories are counted.
✓IIDenmark's count is mainland Denmark (UTC+1), the Faroe Islands (Greenwich Mean Time in winter) and Greenland, which is divided into three time zones (UTC-4 at Pituffik, UTC-2 for most of the island, UTC+0 at Danmarkshavn): five zones by the usual tally.
✓IIINew Zealand's count is New Zealand Standard Time (UTC+12), Chatham Island Standard Time, 45 minutes ahead of it, the territory of Tokelau (UTC+13) and the associated states of the Cook Islands (UTC-10) and Niue (UTC-11): five by the usual tally.
✓IVThe Australian Government's own table lists three mainland zones plus Norfolk Island (UTC+11), Christmas Island (UTC+7) and the Cocos (Keeling) Islands (UTC+6:30), six in all.
✗VBrazil's official legal time uses exactly four zones, UTC-5, UTC-4, UTC-3 and UTC-2, so it does not have more than four.
Remember · Count time zones with overseas territories: UK (nine), Australia (at least six), New Zealand (five) and Denmark (five) exceed four; Brazil has exactly four (UTC-5 to UTC-2).
I.Anadyr in Siberia and Nome in Alaska are a few kilometers from each other, but when people are waking up and getting set for breakfast in these cities, it would be different days.
II.When it is Monday in Anadyr, it is Tuesday in Nome.
Which of the statements given above is/are correct?
Answer & explanation▾
Answer: (a) I only
Siberia lies just west of the International Date Line and Alaska just east of it, so Anadyr and Nome are on different calendar days. Going eastward across the line you subtract a day, so Monday in Anadyr is Sunday in Nome, not Tuesday.
✓IThe two cities lie on opposite sides of the International Date Line (about 180° longitude), so at the same moment their calendar dates differ; morning in Anadyr is still the previous day in Nome.
✗IIMoving from Siberia to Alaska is a crossing towards the east, where you subtract a day (Monday becomes Sunday). Nome is therefore a day behind Anadyr, never a day ahead.
Remember · Crossing the International Date Line travelling eastward, subtract a day; travelling westward, add a day.
Question and answer: UPSC's official GS Paper I (2025, Series A) —
paper ↗ · answer key ↗.
Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). Permalink ·
In how many of the above rows is the given information correctly matched?
Answer & explanation▾
Answer: (d) None
None of the rows is correct, because each region is paired with the wrong country. Mallorca belongs to Spain, Normandy to France and Sardinia to Italy.
✗IMallorca is the largest of the Balearic Islands and belongs to Spain, not Italy; UNESCO lists its Serra de Tramuntana landscape as a Spanish site.
✗IINormandy is a region of northern France; NCERT calls it the French province whose duke conquered England in the eleventh century. It is not part of Spain.
✗IIISardinia is a large Mediterranean island belonging to Italy, not France; UNESCO lists Su Nuraxi di Barumini in Sardinia as an Italian site.
Remember · Mallorca is Spanish, Normandy is French and Sardinia is Italian.
NCERT Class 11 · Themes in World History, Chapter 4“Across a narrow channel lay the island of England–Scotland, which in the eleventh century was conquered by a duke from the French province of Normandy.”
Question and answer: UPSC's official GS Paper I (2025, Series A) —
paper ↗ · answer key ↗.
Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). Permalink ·
Which of the following countries are well known as the two largest cocoa producers in the world?
Answer & explanation▾
Answer: (c) Côte d'Ivoire and Ghana
Cocoa needs a hot, wet equatorial climate, and West Africa's Gulf of Guinea coast supplies most of the world's crop. Côte d'Ivoire is the largest producer and Ghana the second; the other pairs lie in drier parts of Africa and are not significant cocoa growers.
✓(c)Côte d'Ivoire is the world's largest cocoa producer, and it and Ghana are the largest cocoa exporters; with Cameroon they account for nearly two-thirds of global cocoa exports.
✗(a)Algeria and Morocco lie in North Africa's dry belt; neither is among the handful of countries that grow almost all of the world's cocoa.
✗(d)Neither Madagascar nor Mozambique is among the nine countries that the International Cocoa Organization says produce over 93% of world cocoa.
Remember · Cocoa belt = West Africa's Gulf of Guinea coast. Côte d'Ivoire is No. 1, Ghana No. 2; together they dominate world cocoa supply.
FAO Investment Centre: Sustainable Cocoa Initiative ↗“Côte d’Ivoire and Ghana are the world’s largest exporters of cocoa. Together with Cameroon, their combined exports account for nearly two-thirds of global exports”
International Cocoa Organization (ICCO): FAQ ↗ · reference work“For the 2019/20 cocoa year, the ICCO Secretariat forecast indicates that 9 countries (Côte d’Ivoire, Ghana, Ecuador, Cameroon, Nigeria, Indonesia, Brazil, Peru and the Dominican Republic) produce altogether over 93% of the world’s cocoa output.”
Question and answer: UPSC's official GS Paper I (2024, Series A) —
paper ↗ · answer key ↗.
Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). Permalink ·
How many of the above countries have a border with the North Sea?
Answer & explanation▾
Answer: (b) Only two
The North Sea lies between Great Britain and the North European mainland. Its shores belong to Norway, Denmark, Germany, the Netherlands, Belgium, France and the United Kingdom (with Sweden on the Kattegat side). Finland and Russia face the Baltic Sea instead, so only Germany and Norway qualify.
✗1.Finland's coasts are on the Baltic Sea — the Gulf of Bothnia and the Gulf of Finland — not the North Sea.
✓2.Germany's north-western coast, with the Elbe and Weser estuaries, opens onto the North Sea.
✓3.Norway's southern and western coast borders the North Sea.
✗4.Russia's European coasts are on the Baltic (Gulf of Finland, Kaliningrad), the Barents and White Seas and the Black Sea — none on the North Sea.
Remember · North Sea countries: UK, Norway, Denmark, Germany, Netherlands, Belgium, France. Finland and Russia are Baltic, not North Sea, states.
Sources
OSPAR Commission: Region II – Greater North Sea ↗ · reference work“The Greater North Sea is surrounded by densely populated, highly industrialised countries (Belgium, Denmark, France, Germany, the Netherlands, Norway, Sweden and United Kingdom).”
Question and answer: UPSC's official GS Paper I (2024, Series A) —
paper ↗ · answer key ↗.
Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). Permalink ·
In how many of the above rows is the given information correctly matched?
Answer & explanation▾
Answer: (b) Only two
Rows 3 and 4 are right: the Appalachians and the Andes are fold mountains raised where plates converged. Row 1 is wrong twice over — the Vosges are in Europe (France) and are a block mountain beside the Rhine rift valley; row 2 is wrong because the Alps are young fold mountains, not block mountains.
✗1.The Vosges are in north-eastern France, west of the Rhine Graben — a sunken block of crust. They are a classic block (horst) mountain of Europe, not a fold range of Central Asia.
✗2.The Alps belong to the young zone of continental collision that runs from the Himalayas to Europe; they are fold mountains, not block mountains.
✓3.The Appalachians formed in continental collisions 500–300 million years ago; their sedimentary layers were folded and faulted. They are old, worn-down fold mountains.
✓4.The Andes were raised as the oceanic Nazca Plate pushed under the South American Plate — a convergent-boundary fold range.
Remember · Fold: Himalayas, Alps, Andes, Rockies (young); Appalachians, Aravallis, Urals (old). Block: Vosges and Black Forest on either side of the Rhine rift valley.
US National Park Service: Convergent Plate Boundaries — Collisional Mountain Ranges ↗“The Appalachian Mountains formed during a collision of continents 500 to 300 million years ago. In their prime they probably had peaks as high as those in the modern zone of continental collision stretching from the Himalayas in Asia to the Alps in Europe.”
Question and answer: UPSC's official GS Paper I (2024, Series A) —
paper ↗ · answer key ↗.
Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). Permalink ·
How many of the pairs given above are correctly matched?
Answer & explanation▾
Answer: (d) None
Every pair is shuffled. The indri is a lemur that lives only in Madagascar, the bonobo is an African ape found in the Congo basin forests of the Democratic Republic of the Congo, and the elk is a large deer of North America and the cold uplands of Asia; none of them occurs wild in the country it is paired with.
✗1.The indri (Indri indri), the largest of the lemurs, lives in the eastern rainforests of Madagascar and is Critically Endangered on the IUCN Red List. Lemurs do not occur naturally in South America, so Brazil is wrong.
✗2.The elk (wapiti) is a large deer known from North America, where scientists call it Cervus canadensis, and it is also found in parts of Central and East Asia. Tropical Indonesia has no wild elk.
✗3.The bonobo, or pygmy chimpanzee, is an African great ape; UNESCO notes it as a threatened species of Salonga National Park in the Democratic Republic of the Congo. Madagascar has no apes.
Remember · Indri = Madagascar (largest lemur). Bonobo = DR Congo only (Salonga NP). Elk/wapiti = North America and Central/East Asia. Madagascar has lemurs but no apes.
IUCN, Amazing Lemurs (Indri) ↗“Indris are the largest of the lemurs and are revered in Malagasy culture - legends tell of humans descending from Indri!”
U.S. National Park Service, Elk, Yellowstone National Park ↗“The North American elk is considered by some experts to be the same species as the red deer of Europe ( Cervus elaphus ). This is an ongoing taxonomic debate. Currently, most scientists refer to elk in North America as Cervus canadensis .”
Question and answer: UPSC's official GS Paper I (2024, Series A) —
paper ↗ · answer key ↗.
Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). Permalink ·
The longest border between any two countries in the world is between:
Answer & explanation▾
Answer: (a) Canada and the United States of America
Canada and the United States share the longest international border in the world, about 8,891 km (5,525 miles) as maintained by the International Boundary Commission. Every other pair listed, including Chile-Argentina, China-India and Kazakhstan-Russia, has a shorter border.
✓(a)The Government of Canada describes the Canada-US land border, at close to 9,000 km, as the longest international border in the world. The joint International Boundary Commission gives its length as 8,891 km.
✗(d)Kazakhstan and Russia share a very long land border, but it is shorter than the Canada-US boundary.
✗(b)The Chile-Argentina border is long and runs along the Andes, but it too is shorter than the Canada-US boundary.
Remember · World's longest international border: Canada-United States, about 8,891 km (5,525 miles).
Question and answer: UPSC's official GS Paper I (2024, Series A) —
paper ↗ · answer key ↗.
Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). Permalink ·
Statement-I:Sumed pipeline is a strategic route for Persian Gulf oil and natural gas shipments to Europe.
Statement-II:Sumed pipeline connects the Red Sea with the Mediterranean Sea.
Which one of the following is correct in respect of the above statements?
Answer & explanation▾
Answer: (a) Both Statement-I and Statement-II are correct and Statement-II explains Statement-I
The SUMED pipeline runs across Egypt and carries crude oil from the Red Sea to the Mediterranean Sea. Together with the Suez Canal it forms a strategic route for Persian Gulf energy shipments to Europe. The Red Sea-Mediterranean link is exactly what makes it a route to Europe, so Statement-II explains Statement-I.
✓Statement-IThe US Energy Information Administration calls the Suez Canal and the SUMED Pipeline strategic routes for Persian Gulf crude oil, petroleum products and LNG shipments to Europe and North America.
✓Statement-IIThe roughly 200-mile SUMED Pipeline carries crude oil northbound through Egypt from the Red Sea to the Mediterranean Sea. It is the only alternative for such crude if ships cannot pass through the Suez Canal, which is why it works as a route to Europe.
Remember · SUMED pipeline: about 200 miles across Egypt, carrying crude oil from the Red Sea to the Mediterranean; the alternative to the Suez Canal for such crude.
Question and answer: UPSC's official GS Paper I (2024, Series A) —
paper ↗ · answer key ↗.
Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). Permalink ·
1.The Red Sea receives very little precipitation in any form.
2.No water enters the Red Sea from rivers.
Which of the statements given above is/are correct?
Answer & explanation▾
Answer: (c) Both 1 and 2
Both statements are correct. The Red Sea lies in an arid region: no river drains into it and rainfall is scant. With very high evaporation and little fresh water coming in, it is one of the saltiest seas.
✓1.The Red Sea region is arid with little precipitation. The UN Regular Process assessment calls it an arid area with high evaporation, and NOAA explains its high salinity by very high evaporation and little fresh-water inflow.
✓2.No river brings water into the Red Sea; the UN assessment marks it as a sea with 'no rivers'. With so little fresh water, evaporation keeps the sea very salty; NCERT gives its salinity as high as 41 parts per thousand.
Remember · Red Sea: arid, no rivers, scant rain, very high evaporation and very high salinity (about 41 parts per thousand).
NOAA JetStream, Sea Water ↗“The saltiest ocean water is in the Red Sea and in the Persian Gulf region (around 40ppt) due to very high evaporation and little fresh water inflow.”
Question and answer: UPSC's official GS Paper I (2024, Series A) —
paper ↗ · answer key ↗.
Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). Permalink ·
Statement-I:There is instability and worsening security situation in the Sahel region.
Statement-II:There have been military takeovers/coups d'état in several countries of the Sahel region in the recent past.
Which one of the following is correct in respect of the above statements?
Answer & explanation▾
Answer: (a) Both Statement-I and Statement-II are correct and Statement-II explains Statement-I
Both statements are correct. UN briefings to the Security Council describe armed groups and violent extremists gaining influence across West Africa and the Sahel, with security deteriorating in large parts of the region. Repeated military coups, in Mali and Burkina Faso among others, are themselves destabilizing governments, so Statement-II helps explain Statement-I.
✓Statement-IUN officials told the Security Council that security had again deteriorated in large parts of the region, and voiced concern at terrorist threats spreading from the Sahel towards coastal West African countries.
✓Statement-IIThe President of the ECOWAS Commission cited a recent spate of military coups in the region, including in Mali and Burkina Faso. The UN briefing noted that such repeated coups are destabilizing governments, which adds to the instability in Statement-I.
Remember · Sahel: rising armed-group violence and repeated military coups (Mali, Burkina Faso and others) feed each other's instability.
Question and answer: UPSC's official GS Paper I (2024, Series A) —
paper ↗ · answer key ↗.
Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). Permalink ·
About three-fourths of world's cobalt, a metal required for the manufacture of batteries for electric motor vehicles, is produced by
Answer & explanation▾
Answer: (c) the Democratic Republic of the Congo
The Democratic Republic of the Congo dominates cobalt mining, supplying roughly 70 per cent or more of the world's mined cobalt, most of it from its copper-cobalt belt in the south-east. Much of this is refined in China and used in rechargeable batteries.
✓(c)The US Geological Survey reported that Congo (Kinshasa) remained the world's leading source of mined cobalt in 2022, with about 70% of world mine production.
✗(a)Argentina is known for lithium brines, another battery mineral, not cobalt.
✗(d)Kazakhstan is the world's largest uranium producer; it is not a major cobalt source.
Remember · Cobalt: DR Congo mines about 70–75% of world output, mostly as a by-product of copper; China leads in refining and battery use.
Question and answer: UPSC's official GS Paper I (2023, Series A) —
paper ↗ · answer key ↗.
Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). Permalink ·
Which one of the following is a part of the Congo Basin?
Answer & explanation▾
Answer: (a) Cameroon
South-eastern Cameroon lies in the Congo Basin rainforest: its Dja Faunal Reserve and Lobéké National Park are part of the basin's dense forests. Nigeria drains mainly to the Niger, while South Sudan and Uganda lie in the Nile basin.
✓(a)Cameroon shares the north-western Congo Basin with the Central African Republic and the Republic of Congo; UNESCO sites such as Sangha Trinational and the Dja Faunal Reserve lie in its forests.
✗(b)Nigeria's main river system is the Niger and its tributary the Benue, which flow to the Gulf of Guinea, not the Congo.
✗(d)Uganda, like South Sudan, drains into the White Nile system through Lake Victoria and Lake Albert, so it belongs to the Nile basin.
Remember · Congo Basin countries: DR Congo, Republic of Congo, Cameroon, Central African Republic, Gabon, Equatorial Guinea. Uganda and South Sudan: Nile basin; Nigeria: Niger basin.
Sources
UNESCO World Heritage Centre: Sangha Trinational ↗“Situated in the north-western Congo Basin, where Cameroon, Central African Republic and Congo meet, the site encompasses three contiguous national parks totalling around 750,000 ha.”
Question and answer: UPSC's official GS Paper I (2023, Series A) —
paper ↗ · answer key ↗.
Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). Permalink ·
How many of the above-mentioned countries share a land border with Ukraine?
Answer & explanation▾
Answer: (a) Only two
Only two of the six, Hungary and Romania, share a land border with Ukraine. Ukraine has seven land neighbours: Russia, Belarus, Poland, Slovakia, Hungary, Romania and Moldova.
✗1.Bulgaria does not touch Ukraine; it is separated from it by Romania and the Black Sea.
✗2.The Czech Republic has no border with Ukraine; Slovakia and Poland lie between them.
✓3.Hungary lies on Ukraine's southwest border, so it counts.
✗4.Latvia is a Baltic state. It borders Estonia, Lithuania, Russia and Belarus, not Ukraine.
✗5.Lithuania borders Latvia, Belarus, Poland and Russia (Kaliningrad), not Ukraine.
✓6.Romania also borders Ukraine to the southwest, so it counts.
Remember · Ukraine's seven land neighbours: Russia, Belarus, Poland, Slovakia, Hungary, Romania, Moldova. Of the countries in this list only Hungary and Romania qualify.
Question and answer: UPSC's official GS Paper I (2023, Series A) —
paper ↗ · answer key ↗.
Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). Permalink ·
Which one of the following countries has been suffering from decades of civil strife and food shortages and was in news in the recent past for its very severe famine?
Answer & explanation▾
Answer: (d) Somalia
Somalia, in the Horn of Africa, is the country that fits: years of conflict plus a prolonged drought pushed it to the edge of famine in 2022, and UN agencies issued repeated famine warnings.
✓(d)In April 2022 the UN agencies FAO, OCHA, UNICEF and WFP warned that millions of Somalis were at risk of sliding into famine because of prolonged drought, and WFP describes the country as facing protracted conflict, drought and displacement.
✗(a)Angola is in southern Africa. It was not the subject of the UN famine warnings that made Somalia the news in 2022.
✗(b)Costa Rica (Central America) and Ecuador (South America) had no comparable civil strife or famine warning, so options (b) and (c) are easily ruled out.
Remember · Somalia (Horn of Africa): protracted conflict plus a prolonged drought led UN agencies to warn of famine in 2022.
World Food Programme: Somalia country page ↗ · reference work“Somalia faces complex challenges of protracted conflict, drought, displacement, limited social services and reduced humanitarian funding.”
Question and answer: UPSC's official GS Paper I (2023, Series A) —
paper ↗ · answer key ↗.
Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). Permalink ·
How many of the above pairs are correctly matched?
Answer & explanation▾
Answer: (d) None
None of the pairs is correct; each region has been paired with the wrong conflict. North Kivu and Ituri are in the Democratic Republic of the Congo, Nagorno-Karabakh is at the centre of the Armenia-Azerbaijan conflict, and Kherson and Zaporizhzhia are regions of Ukraine occupied by Russia.
✗1.North Kivu and Ituri are provinces of the Democratic Republic of the Congo, where armed attacks and clashes between armed groups (including M23) and the army have displaced millions. The Armenia-Azerbaijan war is a different conflict.
✗2.Nagorno-Karabakh is the region at the heart of the Armenia-Azerbaijan conflict; the UN Security Council has discussed the Lachin Corridor linking it with Armenia. The Mozambique insurgency is unrelated.
✗3.Kherson and Zaporizhzhia, with Donetsk and Luhansk, are Ukrainian regions that the UN General Assembly said are temporarily occupied by Russia. They have nothing to do with an Israel-Lebanon dispute.
Remember · North Kivu and Ituri: DR Congo. Nagorno-Karabakh: Armenia-Azerbaijan. Kherson and Zaporizhzhia: Ukraine, occupied by Russia.
Question and answer: UPSC's official GS Paper I (2023, Series A) —
paper ↗ · answer key ↗.
Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). Permalink ·
How many of the above pairs are correctly matched?
Answer & explanation▾
Answer: (d) None
None of the pairs is correct: Donbas is in Ukraine, Kachin is in Myanmar and Tigray is in Ethiopia. Each conflict zone has been attached to the wrong country.
✗1.Donbas is the coal-and-industry region of eastern Ukraine made up of the Donetsk and Luhansk regions, where fighting has displaced people since 2014. It has nothing to do with Syria.
✗2.Kachin is a state in northern Myanmar, on the border with China. Fighting between government troops and Kachin rebels (the Kachin Independence Organization) has displaced tens of thousands there. It is not in Ethiopia.
✗3.Tigray is a region in northern Ethiopia, the centre of the northern Ethiopia conflict that began in November 2020. It has no link with North Yemen.
Remember · Donbas: Ukraine. Kachin: Myanmar. Tigray: Ethiopia. Place every conflict zone in its own country before matching.
Sources
UN OCHA, Ukraine Situation Report No. 8, 22 August 2014 ↗ · reference work“The humanitarian situation in eastern Ukraine continues to deteriorate. Fighting and shelling in Donetsk and Luhansk is resulting in accelerated displacement. … The humanitarian needs of displaced people in and around Donbas region are increasing as well.”
Question and answer: UPSC's official GS Paper I (2023, Series A) —
paper ↗ · answer key ↗.
Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). Permalink ·
In the recent years Chad, Guinea, Mali and Sudan caught the international attention for which one of the following reasons common to all of them?
Answer & explanation▾
Answer: (d) Successful coups
All four countries saw armed forces seize power in 2020-21: Mali in 2020 and again in May 2021, Chad in April 2021, Guinea in September 2021 and Sudan in October 2021. The UN itself described these as a wave of takeovers across the Sahel and West Africa.
✓(d)Military takeovers happened in Mali, Chad, Guinea and Sudan between 2020 and 2021. This is the one feature common to all four; the UN linked them together while reacting to another coup in Burkina Faso in January 2022.
✗(a)None of these events was about a rare-earth discovery. The four countries are in the news for political instability, not for a shared mineral find.
✗(b)No shared story of Chinese military bases links the four countries.
✗(c)Desertification of the Sahel is a regional concern, but it does not apply to all four: Guinea is a humid Atlantic-coast country, far from the Sahara, and the option does not describe why they were in the news.
Remember · Mali (2020, 2021), Chad (2021), Guinea (2021), Sudan (2021) and later Burkina Faso (2022) all saw military seizures of power; the common thread is coups.
Question and answer: UPSC's official GS Paper I (2023, Series A) —
paper ↗ · answer key ↗.
Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). Permalink ·
Which one of the following lakes of West Africa has become dry and turned into a desert?
Answer & explanation▾
Answer: (b) Lake Faguibine
Lake Faguibine, near Timbuktu in northern Mali, was fed by overflow from the Niger. Droughts in the 1970s dried it, and sand then choked the channels from the river, so even when rains returned the water could not reach it; the lake bed has largely turned to desert.
✓(b)UNEP reports that Lake Faguibine has been dry since the 1970s: droughts emptied the lake system and sand-filled channels cut it off from the Niger's floods.
✗(a)Lake Victoria is in East Africa (shared by Uganda, Kenya and Tanzania), not West Africa, and it has not dried up.
✗(d)Lake Volta in Ghana is a large artificial reservoir behind the Akosombo Dam and still holds water for hydropower; Lake Oguta in Nigeria is also a living lake.
Remember · Lake Faguibine (Mali, near Timbuktu): Niger-fed lake system dried since the 1970s droughts — a Sahel symbol of desertification; UNEP has worked on reviving it.
Question and answer: UPSC's official GS Paper I (2022, Series A) —
paper ↗ · answer key ↗.
Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). Permalink ·
The term "Levant" often heard in the news roughly corresponds to which of the following regions?
Answer & explanation▾
Answer: (a) Region along the eastern Mediterranean shores
The Levant is the land along the eastern shore of the Mediterranean — today's Syria, Lebanon, Israel, the Palestinian territories and Jordan, often with Cyprus and Turkey's Hatay province. The word comes from the French for 'rising', the direction of the sunrise as seen from Europe.
✓(a)The Levant covers the coastal lands of the eastern Mediterranean and their hinterland: Syria, Lebanon, Israel, the West Bank and Gaza, and Jordan.
✗(b)The North African coast west of Egypt — Libya, Tunisia, Algeria and Morocco — is called the Maghreb, not the Levant.
✗(d)The Levant is only the eastern end of the Mediterranean; it does not include the European or North African coasts.
Encyclopaedia Britannica: Levant ↗ · reference work“Levant , region along the eastern Mediterranean shores, roughly corresponding to modern-day Israel , the West Bank , the Gaza Strip , Jordan , Lebanon , Syria , and often Cyprus and Hatay il (province) of Turkey (Türkiye). … The term Levant comes from the French word lever , meaning “to rise,” as in sunrise, referring to the east.”
Encyclopaedia Britannica: Maghrib ↗ · reference work“now comprises essentially the Atlas Mountains and the coastal plain of Morocco , Algeria , Tunisia , and Libya”
Afghanistan's northern neighbours are three Central Asian republics — Turkmenistan, Uzbekistan and Tajikistan — along with Iran to the west, Pakistan to the east and south, and China at the tip of the Wakhan Corridor. Kyrgyzstan and Azerbaijan do not touch it.
✗1.Azerbaijan lies in the South Caucasus on the western shore of the Caspian Sea, with Iran and Turkmenistan's sea front between it and Afghanistan.
✗2.Kyrgyzstan lies north of Tajikistan; the narrow Wakhan Corridor keeps Afghanistan from reaching it.
✓3.Tajikistan shares Afghanistan's long north-eastern border, much of it along the Amu Darya (Panj) river.
✓4.Turkmenistan borders Afghanistan in the north-west.
✓5.Uzbekistan has a short border with Afghanistan along the Amu Darya, near Termez.
Remember · Afghanistan's six neighbours: Pakistan, Iran, Turkmenistan, Uzbekistan, Tajikistan and China (via the Wakhan Corridor). India also claims a border through Pakistan-occupied Kashmir.
Question and answer: UPSC's official GS Paper I (2022, Series A) —
paper ↗ · answer key ↗.
Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). Permalink ·
1.Vietnam has been one of the fastest growing economies in the world in the recent years.
2.Vietnam is led by a multi-party political system.
3.Vietnam's economic growth is linked to its integration with global supply chains and focus on exports.
4.For a long time Vietnam's low labour costs and stable exchange rates have attracted global manufacturers.
5.Vietnam has the most productive e-service sector in the Indo-Pacific region.
Which of the statements given above are correct?
Answer & explanation▾
Answer: (c) 1, 3 and 4
Statements 1, 3 and 4 are correct. Vietnam's growth has been rapid and export-led, but it is a one-party state led by the Communist Party, not a multi-party system, and its strength lies in manufacturing rather than services.
✓1.The World Bank describes four decades of rapid growth in Viet Nam since the Doi Moi reforms of 1986.
✗2.Article 4 of Vietnam's Constitution makes the Communist Party of Vietnam the force leading the State and society; it is a one-party system.
✓3.Growth was amplified by strategic integration into global trade and investment flows, as the World Bank notes.
✓4.The OECD lists competitive labour costs (with proximity, trade agreements and infrastructure) among the reasons manufacturers relocate to Viet Nam. UPSC's official key counts the statement as correct; we could not confirm the exchange-rate detail from an official source, so we do not explain it here.
✗5.UPSC's key treats this as incorrect. Vietnam's growth story is built on manufacturing exports; nothing in the sources supports a claim of regional leadership in e-services.
Remember · Vietnam: Doi Moi (1986), export-led growth in global supply chains, one-party Communist state.
Sources
World Bank: Viet Nam Overview ↗“a milestone in four decades of rapid growth that began with economic reforms launched under Đổi Mới in 1986. Strategic integration into global trade and investment flows amplified this momentum”
OECD, FDI Qualities Review of Viet Nam (2026) ↗“Viet Nam’s geographic proximity, competitive labour costs, expanding network of free trade agreements, and improving infrastructure have made it one of the primary destinations for these relocations”
1.Bidibidi is a large refugee settlement in north-western Kenya.
2.Some people who fled from South Sudan civil war live in Bidibidi.
3.Some people who fled from civil war in Somalia live in Dadaab refugee complex in Kenya.
Which of the statements given above is/are correct?
Answer & explanation▾
Answer: (c) 2 and 3
Bidibidi is in Uganda, not Kenya, so statement 1 is wrong. Statements 2 and 3 are right: Bidibidi shelters refugees from South Sudan's conflict, and Kenya's Dadaab complex was set up for refugees escaping the civil war in Somalia.
✗1.Bidibidi settlement lies in Uganda's Yumbe district, in the north of that country. It was opened in August 2016 and was described as the largest refugee settlement in the world by December 2016.
✓2.It was opened to house part of the flow of South Sudanese refugees who crossed into northern Uganda after the conflict spread to South Sudan's Equatoria region.
✓3.Dadaab, in Kenya, was established in 1991 when refugees fleeing the civil war in Somalia began crossing the border, with a large second influx in 2011.
Remember · Bidibidi = northern Uganda (South Sudanese refugees). Dadaab = Kenya (refugees from Somalia's civil war). Do not swap the countries.
UNHCR Kenya, Dadaab Refugee Complex ↗ · reference work“The Dadaab refugee complex was established in 1991, when refugees fleeing the civil war in Somalia started to cross the border into Kenya.”
Question and answer: UPSC's official GS Paper I (2022, Series A) —
paper ↗ · answer key ↗.
Explanation: Minimalist IAS, checked 30 Sept 2026 (how we verify). Permalink ·
Which one of the following statements best reflects the issue with Senkaku Islands, sometimes mentioned in the news?
Answer & explanation▾
Answer: (b) China and Japan engage in maritime disputes over these islands in East China Sea.
The Senkaku Islands are a group of small uninhabited islands in the East China Sea that Japan administers and China (and Taiwan) also claim, so China and Japan are in a maritime dispute over them. The other options describe things that have no basis: they are natural islands, not in the South China Sea, and no US base or ICJ ruling is involved.
✓(b)Japan administers the islands, which it places under Ishigaki City, Okinawa. China and Taiwan press their own claims, which they began asserting around 1970-71 after a UN-linked survey pointed to possible oil under the seabed.
✗(a)They are natural islands and rocks in the East China Sea, not artificial islands and not in the South China Sea.
✗(c)The islands are uninhabited and no permanent American base has been set up on them to help Taiwan.
✗(d)The International Court of Justice has not ruled on them, and the claimants are Japan, China and Taiwan, not South-East Asian countries.
Remember · Senkaku (Japanese name) or Diaoyu (Chinese name) islands: East China Sea, administered by Japan, claimed by China and Taiwan.