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Chemistry - Environmental Chemistry

Practise 62 AP EAMCET previous year questions on Environmental Chemistry, compiled from papers spanning 2001 to 2025. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty AP EAMCET tests.

Environmental Chemistry has been asked in 22 of the 24 years of AP EAMCET papers analysed (2001–2024), with 62 questions in all. 89% of them were easy, 11% moderate and 0% tough. Most of its questions came from 2021, with 10 questions that year. In the last three years (2022–2024) it had 5 questions across 28 papers, about 0.2 per paper.

The chapter's 4 topics are not weighted equally: Air Pollution (33 questions, 53%), Water Pollution (18 questions, 29%), and Environmental Pollution and pollutants (8 questions, 13%) have been asked the most. Air Pollution has also led over the last five years, with 13 questions.

  1. 1Which of the following statements is not correct ?27 May, 2025 (M)Air Pollution
  2. 2Which one of the following gases is the major contributor to global warming ?26 May, 2025 (M)Air Pollution
  3. 3The incorrect statement from the following is26 May, 2025 (E)Air Pollution
  4. 4Which one of the following statements related to photochemical smog is not correct?24 May, 2025 (M)Air Pollution
  5. 5Match the following List - I (Pollutant concentration limit in water) List - II (Effect) Brown mottling of teeth 'Blue baby' syndrome Laxati23 May, 2025 (M)Water Pollution
  6. 6Which of the following when present in excess in drinking water causes the disease methemoglobinemia?23 May, 2025 (E)Water Pollution
  7. 7MATCH THE FOLLOWING: List - I List - II (Metal in drinking water) (Maximum prescribed concentration in ppm) A) Mn I) 0.05 B) Zn II) 3.0 C) C22 May, 2025 (M)Water Pollution
  8. 8Among the following compounds, which one is not responsible for the depletion of ozone layer?22 May, 2025 (E)Air Pollution
  9. 9Identify the air pollutant which in high concentration leads to stiffness of flower buds?21 May, 2025 (E)Air Pollution
  10. 10Which of the following is lung irritant?23 May, 2024 (M)Air Pollution
  11. 11Which of the following is/are estimated by titrating polluted water with potassium dichromate solution in acidic medium? {array}{|c|c|c|} CO22 May, 2024 (M)Water Pollution
  12. 12Match the pollutant in List I with its maximum permissible limit in drinking water given in List II Correct answer is22 May, 2024 (E)Water Pollution
  13. 13The BOD values for pure water and highly polluted water are respectively21 May, 2024 (M)Water Pollution
  14. 14Match the following: Then the correct match is20 May, 2024 (M)Water Pollution
  15. 15Which region of the atmosphere is the domain of all living organisms24 Aug, 2021 (M)Environmental Pollution and pollutants
  16. 16Which of the following practices will not come under green chemistry?24 Aug, 2021 (E)Control of environmental pollution
  17. 17Which gas among the following has the maximum global warming potential?23 Aug, 2021 (M)Air Pollution
  18. 18Identify the structure of the compound which is responsible for Bhopal disaster?23 Aug, 2021 (M)Air Pollution
  19. 19The secondary precursors of photochemical smog are23 Aug, 2021 (E)Air Pollution
  20. 20Which among the following is not a greenhouse gas?20 Aug, 2021 (M)Air Pollution
  21. 21The main constituent of enamel on the surface of teeth is:20 Aug, 2021 (E)Environmental Pollution and pollutants
  22. 22Identify the coldest region among the following layers of atmosphere?20 Aug, 2021 (E)Air Pollution
  23. 23Green chemistry refers to reactions which_____19 Aug, 2021 (M)Control of environmental pollution
  24. 24Which among the following has the highest concentration of PAN ?19 Aug, 2021 (E)Air Pollution
  25. 25BOD means07 Oct, 2020 (Special)Water Pollution
  26. 26DDT is22 Sep, 2020 (E)Environmental Pollution and pollutants
  27. 27In an agricultural field, which among the following is the highest producer of methane?21 Sep, 2020 (M)Air Pollution
  28. 28Which of the following is a biodegradable polymer of polyamide class?18 Sep, 2020 (E)Environmental Pollution and pollutants
  29. 29The insecticide DDT is considered as ____17 Sep, 2020 (M)Environmental Pollution and pollutants
  30. 30Identify the correct statements from the following: i. In the presence of UV light, \( {CF}_2 {Cl}_2(g)\) gives chlorine free radicals which23 Apr, 2019 (M)Water Pollution
  31. 31Acid rain is caused by the presence of \(X\) and \(Y\) in air. \(X, Y\) are respectively22 Apr, 2019 (M)Air Pollution
  32. 32The non-biodegradable waste formed in fertilizer industries is20 Apr, 2019 (M)Environmental Pollution and pollutants
  33. 33Which one of the following statements is not correct?20 Apr, 2019 (E)Air Pollution
  34. 34Methane of the polluted air reacts with ozone and forms the compounds25 Apr, 2018 (M)Air Pollution
  35. 35Match the following24 Apr, 2018 (M)Water Pollution
  36. 36Methemoglobinemia is caused by the presence of in drinking water. is24 Apr, 2018 (E)Water Pollution
  37. 37Methane of the polluted air reacts with ozone and forms the compounds.23 Apr, 2018 (M)Air Pollution
  38. 38The chemical substance of photochemical smog responsible for eye irritation is23 Apr, 2018 (E)Air Pollution
  39. 39The environmental friendly chemical now-a-days used for bleaching the paper in the presence of a suitable catalyst is22 Apr, 2018 (M)Control of environmental pollution
  40. 40Which of the following is not a greenhouse gas?22 Apr, 2018 (E)Air Pollution
  41. 41Which of the following forms holes in the ozone layer?26 Apr, 2017 (M)Air Pollution
  42. 42The COD of water sample is determined using26 Apr, 2017 (E)Water Pollution
  43. 43The growth of fish gets inhibited, if the concentration of dissolved oxygen is below ppm. The value of is25 Apr, 2017 (M)Water Pollution
  44. 44From the following, identify the reactions which are responsible for depletion of ozone layer.25 Apr, 2017 (E)Air Pollution
  45. 45Identify the correct statements from the following a) BOD value of clean water is less than b) Oxidation of ethene in the presence of cataly24 Apr, 2017 (M)Water Pollution
  46. 46Which of the following statements are correct? a) ion concentration above causes brown mottling of teeth b) The maximum limit of nitrate in 24 Apr, 2017 (E)Water Pollution
  47. 47Which of the following causes "blue baby syndrome"?2016Water Pollution
  48. 48Which of the following statements are correct? A. Ocean is sink for B. Greenhouse effect causes lowering of temperature of earth’s surface. 2015Environmental Pollution and pollutants
  49. 49What are and in the following reaction?2014Air Pollution
  50. 50Cataract and skin cancer are caused by2013Air Pollution

Frequently Asked Questions

1.How many questions are available for Environmental Chemistry?

This chapter includes 62 questions compiled from AP EAMCET papers spanning 2001 to 2025.

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

These are AP EAMCET questions specifically for the Environmental Chemistry chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.

3.Is Environmental Chemistry an important chapter for AP EAMCET Chemistry?

Environmental Chemistry has appeared in 23 of the 25 years of AP EAMCET papers covered here, with 62 questions across 60 papers - about one per paper it appears in.

4.What is the difficulty level of Environmental Chemistry questions in AP EAMCET?

Of the 62 questions analysed for this chapter, 89% are easy, 11% moderate and 0% tough. 2021 had the most, with 10 questions.

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

These topics have carried the most weightage in Environmental Chemistry:

  • Air Pollution - 33 questions (53%)
  • Water Pollution - 18 questions (29%)
  • Environmental Pollution and pollutants - 8 questions (13%)
6.Is Environmental Chemistry's weightage in AP EAMCET going up or down?

Across all 60 papers analysed, Environmental Chemistry has averaged about 1.0 questions per paper. In the last three years (2022–2024), that average has fallen, at about 0.2 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.