Theme

Environment & Ecology

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

Questions286
Subtopics21
Tricks12

PYQs by year

286 total
2013
23
2014
32
2015
23
2016
23
2017
16
2018
17
2019
22
2020
22
2021
25
2022
24
2023
22
2024
18
2025
19

Subtopics in this theme

1 Biodiversity Conservation & Protected Areas 91 Explore
2 Biogeography & Ecosystems 77 Explore
3 Flora & Fauna Dynamics 68 Explore
4 Environmental Law & Policy 64 Explore
5 Climate Change & Conventions 61 Explore
6 Air Pollution & Emissions 36 Explore
7 Waste Management & Water Pollution 35 Explore
8 Physical & Regional Geography 24 Explore
9 Renewable & Clean Energy 22 Explore
10 Agricultural Policies & Supply Chains 17 Explore
11 Indian Hydrography & Water Bodies 9 Explore
12 Biotechnology & Genetic Engineering 8 Explore
13 Welfare Schemes & Social Policies 6 Explore
14 Constitutional & Statutory Bodies 4 Explore
15 Physics & Materials Science 3 Explore
16 Financial Markets & Instruments 2 Explore
17 Microbiology & Epidemiology 2 Explore
18 Emerging Information Technologies 1 Explore
19 International Financial Institutions 1 Explore
20 Macroeconomic Trends & Inflation 1 Explore
21 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.

Show 10 more tricks Hide extra tricks
  • 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 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…

  • 1

    Associate major river systems with their unique aquatic biodiversity and conservation efforts.