26 questions UPSC asked between 2016 and 2026, 30 minutes, negative marking — your score as soon as you submit.
Pick up where you left off
26
questions
30 min
at the exam's pace
52
maximum marks
Environment & ecology has 6 sets of about 25 questions — together, every question UPSC has asked on it since 2016. This is set 2; when you finish, the next one is a tap away.
1Answer in any order: skip, mark for review and come back from the question palette.
2Submit when you're done, or the 30 min timer submits for you. Close the page and come back any time — your answers are saved in this browser.
3See your score straight away. Sign up free (or log in) for the full report and every question with UPSC's answer and our explanation.
Marking, as in the exam: +2 for a correct answer, −0.66 for a wrong one, 0 if you leave it.
Questions from the latest paper are scored against UPSC's provisional answer key (the final key comes out after the final result).
What's in this test
Topic
Questions
Easy
Medium
Hard
Biodiversity, plants & animals
7
5
2
0
Climate change & agreements
5
4
1
0
Pollution & waste
5
3
2
0
Environmental laws, bodies & conventions
4
1
3
0
Ecology & ecosystems
3
1
2
0
Protected areas & conservation
2
2
0
0
Difficulty is the Vault's own rating of each question; subjects and topics follow the official syllabus.
The timer starts when you press Start. Your progress is saved in this browser.
You have an attempt in progress
About this test
How is this test marked?
As in UPSC's GS Paper I: 2 marks for each correct answer and a third of that (0.66) deducted for each wrong one. A question you leave scores nothing. The maximum here is 52.
How long do I get?
30 minutes — the exam's pace (100 questions in 2 hours) for 26 questions. When the time runs out, your answers are submitted as they stand.
How are the sets made?
Every question UPSC has asked on Environment & ecology since 2016 is in one of the 6 sets of about 25, each mixing topics and years. Questions UPSC dropped from evaluation are left out. Take them in any order; the sets page shows which you've done.
Is it free?
Yes. Anyone can take the test and see their score straight away. A free sign-up shows the full report and every question with UPSC's answer and an explanation.
Which of the following statements with regard to the arrival of Amur Falcons at Doyang Lake in Nagaland each year from Mongolia is/are correct?
1.It showcases how sustained local conservation efforts can contribute to the arrival and protection of international migratory birds.
2.It reflects the global success of advanced tracking technologies that guide migratory birds back to their stopover sites.
3.It confirms that Amur Falcons have adapted to permanent residency in India due to favourable habitat changes.
Select the answer using the code given below:
Question 2 of 26 · Prelims 2025, Q36
With reference to ‘Direct Air Capture’, an emerging technology, which of the following statements is/are correct?
I.It can be used as a way of carbon sequestration.
II.It can be a valuable approach for plastic production and in food processing.
III.In aviation, it can be a source of carbon for combining with hydrogen to create synthetic low-carbon fuel.
Select the correct answer using the code given below.
Question 3 of 26 · Prelims 2024, Q16
One of the following regions has the world's largest tropical peatland, which holds about three years worth of global carbon emissions from fossil fuels; and the possible destruction of which can exert detrimental effect on the global climate. Which one of the following denotes that region?
Question 4 of 26 · Prelims 2024, Q22
Consider the following statements:
Statement-I:Many chewing gums found in the market are considered a source of environmental pollution.
Statement-II:Many chewing gums contain plastic as gum base.
Which one of the following is correct in respect of the above statements?
Question 5 of 26 · Prelims 2024, Q23
Consider the following pairs:
Country
Animal found in its natural habitat
1.
Brazil
Indri
2.
Indonesia
Elk
3.
Madagascar
Bonobo
How many of the pairs given above are correctly matched?
Question 6 of 26 · Prelims 2023, Q15
Which of the following organisms perform waggle dance for others of their kin to indicate the direction and the distance to a source of their food?
Question 7 of 26 · Prelims 2022, Q21
Among the following crops, which one is the most important anthropogenic source of both methane and nitrous oxide?
Question 8 of 26 · Prelims 2022, Q46
With reference to polyethylene terephthalate, the use of which is so widespread in our daily lives, consider the following statements:
1.Its fibres can be blended with wool and cotton fibres to reinforce their properties.
2.Containers made of it can be used to store any alcoholic beverage.
3.Bottles made of it can be recycled into other products.
4.Articles made of it can be easily disposed of by incineration without causing greenhouse gas emissions.
Which of the statements given above are correct?
Question 9 of 26 · Prelims 2022, Q89
With reference to Indian laws about wildlife protection, consider the following statements:
1.Wild animals are the sole property of the government.
2.When a wild animal is declared protected, such animal is entitled for equal protection whether it is found in protected areas or outside.
3.Apprehension of a protected wild animal becoming a danger to human life is sufficient ground for its capture or killing.
Which of the statements given above is/are correct?
Question 10 of 26 · Prelims 2022, Q90
Certain species of which one of the following organisms are well known as cultivators of fungi?
Question 11 of 26 · Prelims 2021, Q22
Consider the following kinds of organisms:
1.Copepods
2.Cyanobacteria
3.Diatoms
4.Foraminifera
Which of the above are primary producers in the food chains of oceans?
Question 12 of 26 · Prelims 2021, Q74
Bisphenol A (BPA), a cause of concern, is a structural/key component in the manufacture of which of the following kinds of plastics?
Question 13 of 26 · Prelims 2020, Q74
With reference to India's biodiversity, Ceylon frogmouth, Coppersmith barbet, Gray-chinned minivet and White-throated redstart are
Question 14 of 26 · Prelims 2020, Q85
Which one of the following statements best describes the term ‘Social Cost of Carbon’?
It is a measure, in monetary value, of the
Question 15 of 26 · Prelims 2020, Q95
With reference to India's Desert National Park, which of the following statements are correct?
1.It is spread over two districts.
2.There is no human habitation inside the Park.
3.It is one of the natural habitats of Great Indian Bustard.
Select the correct answer using the code given below:
Question 16 of 26 · Prelims 2019, Q35
Consider the following:
1.Carbon monoxide
2.Methane
3.Ozone
4.Sulphur dioxide
Which of the above are released into atmosphere due to the burning of crop/biomass residue?
Question 17 of 26 · Prelims 2019, Q58
Consider the following statements:
The Environment Protection Act, 1986 empowers the Government of India to
1.state the requirement of public participation in the process of environmental protection, and the procedure and manner in which it is sought
2.lay down the standards for emission or discharge of environmental pollutants from various sources
Which of the statements given above is/are correct?
Question 18 of 26 · Prelims 2018, Q60
The term "sixth mass extinction/sixth extinction" is often mentioned in the news in the context of the discussion of
Question 19 of 26 · Prelims 2018, Q88
“Momentum for Change: Climate Neutral Now” is an initiative launched by
Question 20 of 26 · Prelims 2017, Q6
Consider the following statements in respect of Trade Related Analysis of Fauna and Flora in Commerce (TRAFFIC):
1.TRAFFIC is a bureau under United Nations Environment Programme (UNEP).
2.The mission of TRAFFIC is to ensure that trade in wild plants and animals is not a threat to the conservation of nature.
Which of the above statements is/are correct?
Question 21 of 26 · Prelims 2017, Q21
Due to some reasons, if there is a huge fall in the population of species of butterflies, what could be its likely consequence/consequences?
1.Pollination of some plants could be adversely affected.
2.There could be a drastic increase in the fungal infections of some cultivated plants.
3.It could lead to a fall in the population of some species of wasps, spiders and birds.
Select the correct answer using the code given below:
Question 22 of 26 · Prelims 2017, Q67
If you want to see gharials in their natural habitat, which one of the following is the best place to visit?
Question 23 of 26 · Prelims 2016, Q33
Which of the following best describes/describe the aim of 'Green India Mission' of the Government of India?
1.Incorporating environmental benefits and costs into the Union and State Budgets thereby implementing the 'green accounting'
2.Launching the second green revolution to enhance agricultural output so as to ensure food security to one and all in the future
3.Restoring and enhancing forest cover and responding to climate change by a combination of adaptation and mitigation measures
Select the correct answer using the code given below.
Question 24 of 26 · Prelims 2016, Q57
With reference to 'Agenda 21', sometimes seen in the news, consider the following statements:
1.It is a global action plan for sustainable development.
2.It originated in the World Summit on Sustainable Development held in Johannesburg in 2002.
Which of the statements given above is/are correct?
Question 25 of 26 · Prelims 2016, Q86
In the cities of our country, which among the following atmospheric gases are normally considered in calculating the value of Air Quality Index?
1.Carbon dioxide
2.Carbon monoxide
3.Nitrogen dioxide
4.Sulfur dioxide
5.Methane
Select the correct answer using the code given below.
Question 26 of 26 · Prelims 2016, Q90
Recently, for the first time in our country, which of the following States has declared a particular butterfly as 'State Butterfly'?
Keyboard: A–D to choose, ←→ to move, M to mark for review.
Time ran out, so your answers were submitted automatically.
Loading your answers…
We couldn't load the answers just now. Your attempt is saved.
🔒
Sign up free to see where you lost marks
Your detailed report (correct, wrong and skipped, subject-wise breakdown, answer sheet) and every question with its answer and explanation are for Minimalist IAS members. Membership is free.