Last Updated on November 5, 2025 by Admin
Environment Previous Year Questions – Topic Wise
| Sr. No. | Topic Name | Previous Year Questions |
|---|---|---|
| A) | Environment Ecology | Click Here |
| B) | India’s Biodiversity | Click Here |
| C) | Environmental Pollution and Remedies | Click Here |
| D) | Climate Change | Click Here |
| E) | India – Efforts for Environmental Conservation | Click Here |
| F) | Global Initiatives for the Environment | Click Here |
| G) | Agriculture and Environment | Click Here |
| H) | Renewable and Alternative Energy Sources | Click Here |
Topic Wise Analysis of Environment PYQs
| 8] Environment – Topicwise Weightage | % of Questions (2011-2024) | % of Questions (2022-2024) | No. of Questions (2011-2024) | No. of Questions (2022-2024) |
|---|---|---|---|---|
| A) Environment Ecology | 14% | 20% | 34 | 11 |
| B) Biodiversity in India | 22% | 19% | 54 | 10 |
| C) Environment Pollution and Remedies | 15% | 17% | 37 | 9 |
| D) Climate Change | 10% | 7% | 25 | 4 |
| E) Indian Initiatives for Environment Protection | 15% | 9% | 37 | 5 |
| F) Global Initiatives for Environment Protection | 11% | 11% | 28 | 6 |
| G) Agriculture and Environment | 7% | 4% | 18 | 2 |
| H) Renewable and Alternate Energy Sources | 5% | 13% | 13 | 7 |
| Total | 100% | 100% | 246 | 54 |
About Environment PYQs
Environment is the next most important subject after Indian Economy when it comes to UPSC Prelims. As suggested by subject wise weightage of previous year questions, around 17 questions are asked from Environment each year.
As you can see below, around 50% of the questions come from B) India’s biodiversity, C) Environment pollution and remedies & E) India’s efforts for environmental protection.
Compared to Economy & Polity, the weightage of current environmental affairs is slightly more. Around 5-8, questions do come on the basis of current affairs. So, that part also needs to be done well.
Environment -Detailed Topic Wise Syllabus Based on PYQs
A) Environment Ecology
Environment, ecology, ecosystem, energy flow, food chain and food web, biogeochemical cycles, terrestrial and aquatic ecosystems, biotic interactions etc.
B) India’s Biodiversity
Flora, fauna and Indian wildlife diversity, their natural habitats, peculiar features, the endangered status of various species, coral reefs, threats to biodiversity etc.
C) Environmental Pollution and Remedies
Environmental pollution – air, water, soil, noise pollution, radioactive pollution, e-waste, acid rain, remedies for pollution, govt. initiatives, bio-remediation etc.
D) Climate Change
Theoretical questions on climate change e.g. causes of climate change, contributing factors, terms associated with climate change, scientific solutions for climate change etc.
E) India – Efforts for Environmental Conservation
Various govt. and non-govt. initiatives for biodiversity and environmental protection, climate change, ozone depletion etc. Wildlife protection act, protected areas, various projects etc. biosphere reserves, national parks, Ramsar convention and Ramsar sites, environment protection act etc.
F) Global Initiatives for the Environment
Global initiatives for climate, environment, biodiversity protection etc.
G) Agriculture and Environment
Agricultural issues that are concerned with the environment and climate change. Eco-friendly agricultural practices, organic farming etc.
H) Renewable and Alternative Energy Sources
Renewable energy sources, non-conventional energy sources, solar energy, bio-fuels, and other new inventions in the field
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