Environment and Ecology
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Environment and Ecology questions with answers

2,222 multiple-choice questions. Open any question for its answer and explanation.

Questions asked in State PSC and UPSC prelims, by topic. Each topic also has notes to read.

Read the notes: Greenhouse Effect and Climate Change →

  1. Which one of the following greenhouse gases is in largest concentration in the atmosphere?Asked in UPSC NDA 2 2018
  2. Considering the global warming potential of CO₂ as one, the global warming potential of CH₄ has been estimated to be approximately :Asked in OPSC CS Prelims 2017
  3. The safe threshold limit of CO₂ concentration in the atmosphere in ppm is :Asked in OPSC CS Prelims 2017
  4. Which among the following is the most abundant Green-House-Gas (GHG) in the earth's atmosphere ?Asked in OPSC CS Prelims 2018
  5. Which of the following is the most important greenhouse gas in the earth's atmosphere ?Asked in OPSC CS Prelims 2019
  6. In terms of efficiency, the most potent greenhouse gas is :Asked in OPSC CS Prelims 2021
  7. Gases that trap heat in the atmosphere and cause global warming are called greenhouse gases. Which of the following combinations are not included under the greenhouse gases?Asked in OPSC CS Prelims 2022
  8. The targets for the first commitment period of the Kyoto Protocol cover emissions of the six main greenhouse gases. Which of the following gas is not one of these ?Asked in PPSC CS Prelims 2015
  9. The relative contributions of carbon dioxide (CO₂), nitrous oxide (N₂O), chlorofluorocarbons (CFCs) and methane (CH₄) towards global warming areAsked in RPSC RAS Prelims 2016
  10. Which of the following statements are true about greenhouse gases ?Asked in TSPSC Group 1 Prelims 2024
  11. Which set of the following gases is most important for greenhouse effect ?Asked in UKPSC CS Prelims 2016
  12. Which among the following gas is most responsible for global warming ?Asked in UKPSC CS Prelims 2012
  13. The relative contribution of different green house gases to global warming is given below. Identify the incorrect pair.Asked in UKPSC CS Prelims 2024
  14. Methane is emitted from which of the following?Asked in UPPCS Prelims 2018
  15. The gas, which is emitted in the paddy fields and increases the earth's temperature isAsked in UPPCS Prelims 2019
  16. Which one of the following is NOT a green house gas found naturally in the atmosphere?Asked in UPPCS Prelims 2020
  17. Which of the following is NOT a green house gas?Asked in UPPCS Prelims 2022 · UPPCS Prelims 2012
  18. Which one of the following is not correctly matched? Green House Gas - SourceAsked in UPPCS Prelims 2017
  19. Which one among the following is not a greenhouse gas?Asked in UPSC CAPF 2012
  20. Methane is a very potent green house gas. It is converted to carbon dioxide to ease its overall effect on global warming. This process is known as :Asked in UPSC CAPF 2014
  21. Which one among the following substances is NOT a 'green house' gas ?Asked in UPSC CAPF 2015
  22. The largest greenhouse gas leakage in the US history took place in February 2016. The gas was :Asked in UPSC CAPF 2016
  23. Which of the following statements best describes “carbon fertilization”?Asked in UPSC IAS 2018
  24. One of the following regions has the world's largest tropical peatland, which holds about three years worth of global carbon emissions from fossil fuels; and the possible destruction of which can exert detrimental effect on the global climate. Which one of the following denotes that region?Asked in UPSC IAS 2024
  25. Which one of the following gases is not responsible for global warming ?Asked in UPSC CISF AC EXE 2018