Miscellaneous: UPSC Previous Year Questions (Environment and Ecology)
2 previous year UPSC Prelims questions on Miscellaneous (Environment and Ecology). Choose an option to see the answer and explanation.
Explanations state facts as of the year each question was asked; words like “recently” refer to that year.
Showing 1–2 of 2 questions
UPSC 2010Environment and Ecology · Miscellaneous
Q1. As a result of their annual survey, the National Geographic Society and an international polling firm Globe Scan gave India top rank in Greendex 2009 score. What is this score?
Explanation
In the Greendex 2009 report, India was ranked top in the world. The Greendex is a measure of consumer environmental behaviors, which was created by the National Geographic Society in collaboration with the international polling firm GlobeScan. The score reflects how environmentally responsible the population of a country is based on their consumer behavior, such as their attitudes and actions towards sustainability, including energy usage, waste management, and preferences for eco-friendly products. India’s top rank in Greendex 2009 highlighted the eco-friendly practices and sustainable consumption behaviors prevalent among Indian consumers compared to other nations.
UPSC 2010Environment and Ecology · Miscellaneous
Q2. Due to their extensive rice cultivation, some regions may be contributing to global warming. To what possible reason/ reasons is this attributable? 1. The anaerobic conditions associated with rice cultivation cause the emission of methane. 2. When nitrogen based fertilizers are used, nitrous oxide is emitted from the cultivated soil. Which of the statements given above is / are correct?
Explanation
Statement 1 is correct. Methane, a potent greenhouse gas, is released during rice cultivation as flooded paddies create anaerobic conditions, promoting methane-producing micro-organisms. This makes rice farming a major source of methane emissions.
Statement 2 is correct. Nitrous oxide, a potent greenhouse gas, is emitted when nitrogen fertilizers in soil undergo denitrification, converting unused nitrate into nitrous oxide. This gas escapes into the atmosphere, contributing to global warming. v v v
Answer key for these questions
Q
UPSC year
Correct answer
1
2010
(b) It is a measure of environmentally sustainable consumer behaviour in different countries.
2
2010
(c) Both 1 and 2
Frequently asked questions
How many previous year UPSC questions are there on Miscellaneous?
This page covers 2 previous year UPSC Prelims GS Paper-I questions on Miscellaneous (Environment and Ecology), asked from 2008 to 2025. Each has the correct answer and an explanation.
How should I use previous year UPSC questions for Prelims?
Attempt each question first, then open the answer and read the explanation for every option. Repeat by chapter, and track which statements UPSC reuses across years. Previous year questions show the exam pattern and difficulty level.
Which years are covered for Miscellaneous?
Questions on Miscellaneous (Environment and Ecology) are available for 8 years, from 2008 to 2025. Use the Year filter to practise a single paper.
