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RRB Group D Environment — practice by topic

Browse 42 questions across 10 Environment topics. Choose what you want to revise, then open a question to check its answer and worked solution.

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Environment topics

Environment & Ecology (30)National Parks (19)Conservation (12)Endangered Species (12)Protected Areas (12)Environment Basics (11)Transport & National Parks (11)Current Affairs (8)Indian Geography (8)Science & Technology (8)

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In which of the following regions of India are you most likely to come across the 'Great Indian Hornbill' in its natural habitat?Read the answer and worked solution →The major greenhouse gas by quantity emitted globally is:Read the answer and worked solution →

Worked practice questions

In which of the following regions of India are you most likely to come across the 'Great Indian Hornbill' in its natural habitat?

  1. Sand deserts of northwest India
  2. Higher Himalayas of Jammu and Kashmir
  3. Salt marshes of western Gujarat
  4. Western Ghats
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Correct answer: D. Western Ghats

UPSC CSE Prelims 2016 (GS-I, Set A), Q.22. Answer key: D (coaching consensus; UPSC did not publish an official 2016 AK separately on upsc.gov.in).

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The major greenhouse gas by quantity emitted globally is:

  1. Methane (CH4) from livestock
  2. Nitrous oxide (N2O) from fertilisers
  3. Sulphur dioxide (SO2) from industry
  4. Carbon dioxide (CO2) from fossil fuels
Show answer and solution

Correct answer: D. Carbon dioxide (CO2) from fossil fuels

CO2 from fossil-fuel combustion is the largest GHG by quantity. Methane is more potent per molecule (~25x) but less abundant.

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How to practise

  1. Choose a Environment question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
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