Theme

Environment & Ecology

330 PYQs. See the year-wise trend below, then open a subtopic to study tricks and attempt questions.

Questions330
Subtopics22
Tricks12

PYQs by year

330 total
2026
14
2025
19
2024
18
2023
22
2022
24
2021
25
2020
22
2019
22
2018
17
2017
16
2016
23
2015
23
2014
32
2013
23
0
30

Subtopics in this theme

1 Biodiversity Conservation & Protected Areas 103 Explore
2 Biogeography & Ecosystems 81 Explore
3 Climate Change & Conventions 78 Explore
4 Flora & Fauna Dynamics 74 Explore
5 Environmental Law & Policy 71 Explore
6 Air Pollution & Emissions 39 Explore
7 Waste Management & Water Pollution 35 Explore
8 Physical & Regional Geography 25 Explore
9 Renewable & Clean Energy 23 Explore
10 Agricultural Policies & Supply Chains 22 Explore
11 Indian Hydrography & Water Bodies 10 Explore
12 Welfare Schemes & Social Policies 9 Explore
13 Biotechnology & Genetic Engineering 8 Explore
14 Constitutional & Statutory Bodies 4 Explore
15 Financial Markets & Instruments 3 Explore
16 Physics & Materials Science 3 Explore
17 Microbiology & Epidemiology 2 Explore
18 Emerging Information Technologies 1 Explore
19 External Sector & Capital Flows 1 Explore
20 International Financial Institutions 1 Explore
21 Macroeconomic Trends & Inflation 1 Explore
22 Space Science & Exploration 1 Explore

Elimination tricks

12 from PYQs

Common distractors and how to eliminate wrong options in this theme.

  • 1

    Always consider the mobility of nitrates; they are highly soluble and prone to leaching into groundwater, a c…

  • 1

    Always consider the potential ecological and social trade-offs of large-scale industrial development projects.

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  • 1

    Always consider the practical applications and environmental implications of new technologies.

  • 1

    Always cross-check numerical figures like 'one crore' or 'three lakhs' as UPSC frequently modifies these for …

  • 1

    Always scrutinize absolute terms like 'endemic to' or 'only found in'; UPSC frequently uses them to create in…

  • 1

    Always scrutinize statements containing absolute terms like 'only' or 'does not contain any' as they are freq…

  • 1

    Always verify if international alliances are binding or voluntary; many global partnerships are non-binding.

  • 1

    Always verify the exact institutional relationships and parent organizations for environmental bodies.

  • 1

    Always verify the legal basis (Act) for environmental institutions mentioned in the statements.

  • 1

    Associate 'Tropical Wet Evergreen Forests' with regions of consistently high temperature and rainfall.

  • 1

    Associate Golden Mahseer with its known status as a fish, often highlighted in conservation news.

  • 1

    Associate each environmental protocol with its specific issue: Montreal with ozone, Kyoto with climate, Nagoy…