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Botany - Environmental Issues

Practise 85 NEET previous year questions on Environmental Issues, compiled from papers spanning 2002 to 2023. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty NEET tests.

Environmental Issues has been asked in 22 of the 39 years of NEET papers analysed (1988–2026), with 85 questions in all. 68% of them were easy, 31% moderate and 1% tough. Most of its questions came from 2023, with 8 questions that year. In the last three years (2024–2026) it had 0 questions across 13 papers, about 0 per paper.

All of the chapter's questions come from a single topic, Pollution.

  1. 1The thickness of ozone in a column of air in the atmosphere is measured in terms of:2023 (All India)Pollution
  2. 2Which one of the following statements is NOT correct?2023 (All India)Pollution
  3. 3Given below are two statements: Statement I: Electrostatic precipitator is most widely used in thermal power plant. Statement II: Electrosta2023 (All India)Pollution
  4. 4Which of the following statements is correct?2023 (All India)Pollution
  5. 5What will happen if fresh water lake gets contaminated by addition of polluted water with high BOD?2023 (Manipur)Pollution
  6. 6Nitrates and phosphates flowing from agricultural farms into water bodies are a significant cause of :2023 (Manipur)Pollution
  7. 7Match List-I with List-II Choose the correct answer from the option given below:2023 (Manipur)Pollution
  8. 8Select the correct statements regarding dissolved Oxygen and Biochemical oxygen demand. (A) BOD is inversely related to dissolved oxygen. (B2023 (Manipur)Pollution
  9. 9The device which can remove particulate matter present in the exhaust from a thermal power plant is:2022 (Phase 1)Pollution
  10. 10The entire fleet of buses in Delhi were converted to CNG from diesel. In reference to this, which one of the following statements is false?2022 (Phase 1)Pollution
  11. 11Given below are two statements: Statement I : In a scrubber, the exhaust from the thermal plant is passed through the electric wires to char2022 (Phase 1)Pollution
  12. 12Why CNG is considered better fuel than diesel? (a) It can not be adulterated (b) It takes less time to fill the fuel tank (c) It burns more 2022 (Phase 2)Pollution
  13. 13Dobson units are used to measure thickness of:2021Pollution
  14. 14Snow-blindness in Antarctic region is due to2020 (Phase 1)Pollution
  15. 15Montreal protocol was signed in 1987 for control of2020 (Phase 1)Pollution
  16. 16Air (Prevention and Control of Pollution) Act was amended in 1987 to include among pollutants:2020 (Phase 2)Pollution
  17. 17According to Central Pollution Control Board [ CPCB ] what size (in diameter) of particulate is responsible for causing greater harm to huma2020 (Phase 2)Pollution
  18. 18Which of these following methods is the most suitable for disposal of nuclear waste?2019 (All India)Pollution
  19. 19Which of the following pairs of gases is mainly responsible for green house effect?2019 (All India)Pollution
  20. 20Which of the following protocols did aim for reducing emission of chlorofluorocarbons into the atmosphere?2019 (All India)Pollution
  21. 21Polyblend, a fine powder of recycled modified plastic, has proved to be a good material for:2019 (All India)Pollution
  22. 22Due to increasing air-borne allergens and pollutants, many people in urban areas are suffering from respiratory disorder causing wheezing du2019 (All India)Pollution
  23. 23Which of the following statements about ozone is correct?2019 (Odisha)Pollution
  24. 24Which of the following is an innovative remedy for plastic waste?2019 (Odisha)Pollution
  25. 25If an agricultural field is liberally irrigated for a prolonged period of time, it is likely to face problem of2019 (Odisha)Pollution
  26. 26World Ozone Day is celebrated on2018Pollution
  27. 27In the stratosphere, which of the following elements acts as a catalyst in degradation of ozone and release of molecular oxygen?2018Pollution
  28. 28Which of the following is a secondary pollutant?2018Pollution
  29. 29Match the items given in Column I with those in Column II and select the correct option given below: Column I Column II a. Eutrophication i.2018Pollution
  30. 30Which one of the following statements is not valid for aerosols?2017Pollution
  31. 31Crop rotation with legume or grass pasture to improve soil structure and fertility is called,2016 (Phase 1)Pollution
  32. 32Joint Forest Management Concept was introduced in India during:2016 (Phase 1)Pollution
  33. 33Depletion of which gas in the atmosphere can lead to an increased incidence of skin cancers?2016 (Phase 1)Pollution
  34. 34A lake which is rich in organic waste may result in2016 (Phase 2)Pollution
  35. 35The highest DDT concentration in aquatic food chain shall occur in2016 (Phase 2)Pollution
  36. 36Rachel Carson s famous book Silent Spring is related to:2015 (Phase 1)Pollution
  37. 37Which of the following is not one of the prime health risks associated with greater UV radiation through the atmosphere due to depletion of 2015 (Phase 1)Pollution
  38. 38Acid rain is caused by the increase in the atmospheric concentration of :2015 (Phase 2)Pollution
  39. 39An increase in the concentration of the toxicant at successive trophic levels is known as:2015 (Phase 2)Pollution
  40. 40Which of the following are the most suitable indicators of S O 2 pollution in the environment?2015 (Phase 2)Pollution
  41. 41Eutrophication of water bodies leading to killing of fishes is mainly due to non-availability of2015 (Phase 2)Pollution
  42. 42The zone of atmosphere in which the ozone layer is:2014Pollution
  43. 43A scrubber in the exhaust of a chemical industrial plant removes:2014Pollution
  44. 44Kyoto Protocol was endorsed at2013 (All India)Pollution
  45. 45Global warming can be controlled by2013 (All India)Pollution
  46. 46The Air Prevention and Control of Pollution Act came into force in2013 (All India)Pollution
  47. 47The second commitment period for Kyoto Protocol was decided at:2013 (Karnataka)Pollution
  48. 48Climate of the world is threatened by:2013 (Karnataka)Pollution
  49. 49Which one of the following is not correct with regard to the harmful effects of particulate matter of the size 2.5 micro meters or less?2013 (Karnataka)Pollution
  50. 50In an area where DDT had been used extensively, the population of birds declined significantly because2012 (Screening)Pollution

Frequently Asked Questions

1.How many questions are available for Environmental Issues?

This chapter includes 85 questions compiled from NEET papers spanning 2002 to 2023.

2.Are these questions only from NEET, or from other exams too?

These are NEET questions specifically for the Environmental Issues chapter. Questions from other exams like AIIMS or JIPMER are organised separately under their respective exam sections.

3.Is Environmental Issues an important chapter for NEET Botany?

Environmental Issues has appeared in 22 of the 25 years of NEET papers covered here, with 85 questions across 32 papers - about 3 per paper it appears in.

4.What is the difficulty level of Environmental Issues questions in NEET?

Of the 85 questions analysed for this chapter, 68% are easy, 31% moderate and 1% tough. 2023 had the most, with 8 questions.

5.Which topics in Environmental Issues should I focus on?

All of this chapter's questions come from a single topic: Pollution.

6.Is Environmental Issues's weightage in NEET going up or down?

Across all 32 papers analysed, Environmental Issues has averaged about 2.7 questions per paper. In the last three years (2024–2026), that average has fallen, at about 0.0 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.