UPSC Prelims PYQ

UPSC Prelims Environment Questions

110 Environment questions from previous UPSC Prelims papers, from the latest year backwards, each with its answer and explanation.

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Questions: 110
Years covered: 2016–2026
Exam years: 7
With answers: 110

Environment questions by year

2026 🔒10 202512 202415 2023 🔒14 2022 🔒21 2021 🔒17 2016 🔒21

UPSC Prelims Environment Questions

21–27 of 27

Q21 2024 Prelims GS

Consider the following statements:
1. Lions do not have a particular breeding season.
2. Unlike most other big cats, cheetahs do not roar.
3. Unlike male lions, male leopards do not proclaim their territory by scent marking.
Which of the statements given above are correct?
1. 1 and 2 only
2. 2 and 3 only
3. 1 and 3 only
4. 1, 2 and 3
Big catsEnvironmentReproduction and territorial behaviour
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Q22 2024 Prelims GS

Which one of the following is the correct description of “100 Million Farmers”?
1. It is a platform for accelerating the transition towards food and water systems that are net-zero (carbon), nature-positive and that aims to increase farmer resilience.
2. It is an international alliance and a network of individuals and farming organisations interested in supporting and strengthening the development of organic animal husbandry.
3. It is a digital platform fully integrated with service providers and built on blockchain that lets buyers, sellers and third parties trade fertilizers quickly and securely.
4. It is a platform with the mission of encouraging farmers to form Farmer Producer Organisations or Agribusiness Consortiums, thus facilitating access to global open markets to sell their products.
100 million farmers initiativeClimate-resilient food systemsEnvironment
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Q23 2024 Prelims GS

Consider the following:
1. Battery storage
2. Biomass generators
3. Fuel cells
4. Rooftop solar photovoltaic units
How many of the above are considered “Distributed Energy Resources”?
1. Only one
2. Only two
3. Only three
4. All four
Decentralized electricity generation and storageDistributed energy resourcesEnergy systems
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Q24 2024 Prelims GS

Which one of the following shows a unique relationship with an insect that has coevolved with it and that is the only insect that can pollinate this tree?
1. Fig
2. Mahua
3. Sandalwood
4. Silk cotton
Ecological interactionsEnvironmentFig-wasp coevolution
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Q25 2024 Prelims GS

Consider the following:
1. Butterflies
2. Fish
3. Frogs
How many of the above have poisonous species among them?
1. Only one
2. Only two
3. All three
4. None
BiodiversityChemical defence mechanismsEnvironment
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Q26 2024 Prelims GS

Consider the following:
1. Cashew
2. Papaya
3. Red sanders
How many of the above trees are actually native to India?
1. Only one
2. Only two
3. All three
4. None
EnvironmentIndian endemic floraNative and introduced species
View answer & explanation
Q27 2024 Prelims GS

“Membrane Bioreactors” are often discussed in the context of:
1. Assisted reproductive technologies
2. Drug delivery nanotechnologies
3. Vaccine production technologies
4. Wastewater treatment technologies
Biological wastewater treatmentEnvironmentMembrane bioreactors
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Environment questions by year

UPSC Prelims Environment Questions

Consider the following statements:1. Lions do not have a particular breeding season.2. Unlike most other big cats, cheetahs do not roar.3. Unlike male lions, male leopards do not proclaim their territory by scent marking.Which of the statements given above are correct?

Which one of the following is the correct description of “100 Million Farmers”?

Consider the following:1. Battery storage2. Biomass generators3. Fuel cells4. Rooftop solar photovoltaic unitsHow many of the above are considered “Distributed Energy Resources”?

Which one of the following shows a unique relationship with an insect that has coevolved with it and that is the only insect that can pollinate this tree?

Consider the following:1. Butterflies2. Fish3. FrogsHow many of the above have poisonous species among them?

Consider the following:1. Cashew2. Papaya3. Red sandersHow many of the above trees are actually native to India?

“Membrane Bioreactors” are often discussed in the context of:

83 more questions are premium

Consider the following statements:
1. Lions do not have a particular breeding season.
2. Unlike most other big cats, cheetahs do not roar.
3. Unlike male lions, male leopards do not proclaim their territory by scent marking.
Which of the statements given above are correct?

Consider the following:
1. Battery storage
2. Biomass generators
3. Fuel cells
4. Rooftop solar photovoltaic units
How many of the above are considered “Distributed Energy Resources”?

Consider the following:
1. Butterflies
2. Fish
3. Frogs
How many of the above have poisonous species among them?

Consider the following:
1. Cashew
2. Papaya
3. Red sanders
How many of the above trees are actually native to India?