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Environment & Ecology MCQ practice free online · page 58

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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  1. 571UPPSC2007Environment & EcologyEnglish

    Polythene bags cannot be destroyed because they are made of

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    Correct option: C — Polymers

  2. 572RPSC1992Environment & EcologyEnglish

    Which of the following is not destroyed by bacteria?

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    Correct option: D — Plastic

  3. 573UPPSC2014Environment & EcologyEnglish

    Which one of the following is biodegradable?

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    Correct option: D — Rubber

  4. 574Arunachal PSC2016Environment & EcologyEnglish

    Which of the following takes maximum time to decay?

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    Correct option: D — Plastic bag

  5. 575UPPSC2013Environment & EcologyEnglish

    Which one of the following is a bioindicator of air pollution?

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    Correct option: A — Lichen

  6. 576UKPSC2007Environment & EcologyEnglish

    Biological Oxygen Demand (BOD) is an indication of pollution in

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    Correct option: A — Aquatic environment

  7. 577UPPSC2007Environment & EcologyEnglish

    A water body having high BOD indicates that its water is

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    Correct option: C — Being contaminated by sewage

  8. 578UPPSC2011Environment & EcologyEnglish

    The water pollution in a river is determined by measuring the dissolved amount of

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    Correct option: D — Oxygen

  9. 579UPPSC2008Environment & EcologyEnglish

    BOD is maximum in the Ganga river between

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    Correct option: B — Kanpur and Allahabad

  10. 580TSPSC2019Environment & EcologyEnglish

    Bioremediation means

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    Correct option: A — Elimination of toxic pollutant from environment by organisms

Environment & Ecology practice — common questions

Page 58 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".