UPSC previous year question bank

UPSC Environment and ecology Previous Year Questions

42 Environment and ecology questions asked in previous UPSC examinations, arranged from the latest year with answers and explanations.

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Questions: 42
Years covered: 2017–2024
Exam years: 4
With answers: 42

Environment and ecology questions by year

20242 2019 🔒18 2018 🔒15 2017 🔒7

UPSC Environment and ecology Previous Year Questions

1–2 of 2

Q1 Prelims 2024 Prelims GS

Consider the following materials:
1. Agricultural residues
2. Corn grain
3. Wastewater treatment sludge
4. Wood mill waste
Which of the above can be used as feedstock for producing Sustainable Aviation Fuel?
1. 1 and 2 only
2. 3 and 4 only
3. 1, 2, 3 and 4
4. 1, 3 and 4 only
Biofuel feedstocksEnvironment and ecologySustainable aviation fuel
View answer & explanation
Q2 Prelims 2024 Prelims GS

According to the Environmental Protection Agency (EPA), which one of the following is the largest source of sulphur dioxide emissions?
1. Locomotives using fossil fuels
2. Ships using fossil fuels
3. Extraction of metals from ores
4. Power plants using fossil fuels
Air pollutionEnvironment and ecologyMajor emission sources
View answer & explanation

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