11UPPSC2014Environment & EcologyEnglish
National Environmental Engineering Research Institute is situated at
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Correct option: C — Nagpur
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Environment & Ecology MCQ practice free online · page 2
Questions from RRB, NTPC, Group D and JE past papers. Tap an option to check it instantly — every question shows the correct answer, and most carry the explanation the paper gave.
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- 12UPPSC2004Environment & EcologyEnglish
What is important for Sustainable Development?
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Correct option: D — All of the above
- 13CGPSC2015Environment & EcologyEnglish
What was the title of the Rio-20 declaration?
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Correct option: A — The future we want
- 14MPPSC1998Environment & EcologyEnglish
The first ‘Earth Summit’ was held at
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Correct option: C — Rio-de-Janeiro
- 15MPPSC1992Environment & EcologyEnglish
International Conference held in Rio-de-Janeiro was
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Correct option: A — United Nations Conference on Sustainable Development
- 16BPSC2000Environment & EcologyEnglish
What is the thin layer of gases around the earth called?
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Correct option: C — Atmosphere
- 17BPSC1994Environment & EcologyEnglish
Air is a/an
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Correct option: C — Mixture
- 18MPPSC1990Environment & EcologyEnglish
Percentage of nitrogen in dry air
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Correct option: D — 78%
- 19UPPSC2017Environment & EcologyEnglish
Which of the following is considered to be the optimum concentration of carbon dioxide for natural balance in atmosphere?
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Correct option: B — 0.03%
- 20UPPSC2005Environment & EcologyEnglish
Which one of the following Noble Gases is not present in air?
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Correct option: C — Radon
Environment & Ecology practice — common questions
Page 2 of this set has 10 questions on it.
Are these Environment & Ecology questions free to practise?
Yes. Every question on this page is free and needs no account. Create a free account only if you want your progress saved.
Where do these Environment & Ecology MCQs come from?
They are taken from official past papers of Indian government recruitment exams such as RRB NTPC, RRB Group D and RRB JE, and each question keeps a reference to the exam it appeared in.
Are the questions available in Hindi?
Yes. Many papers are set in both languages, so a large share of these questions are available in Hindi. Use the language filter at the top of the page.
Do the questions show answers and explanations?
Every question shows the correct option. Where the source paper included a worked solution, the explanation is shown under "Show answer".