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Chemistry - Environmental Chemistry

Practise 29 MHTCET previous year questions on Environmental Chemistry, compiled from papers spanning 2012 to 2026. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty MHTCET tests.

Environmental Chemistry has been asked in 8 of the 17 years of MHTCET papers analysed (2007–2026), with 29 questions in all. 59% of them were easy, 24% moderate and 17% tough. Most of its questions came from 2025, with 10 questions that year. In the last three years (2024–2026) it had 20 questions across 59 papers, about 0.3 per paper.

The chapter's 5 topics are not weighted equally: Control of environmental pollution (16 questions, 55%), Air Pollution (8 questions, 28%), and Introduction to Nanochemistry (3 questions, 10%) have been asked the most. Control of environmental pollution has also led over the last five years, with 16 questions. Control of environmental pollution has produced the most tough questions (4).

  1. 1Which of the following is a green alternative for dry cleaning solvents?11 Apr, 2026 (M)Control of environmental pollution
  2. 2Which from following gases causes the depletion of ozone layer in upper atmosphere?05 May, 2025 (E)Air Pollution
  3. 3Find principle of green chemistry to show protection of selective group is not advantageous.05 May, 2025 (E)Control of environmental pollution
  4. 4Which from following is the most commonly used refrigerant Freon-12?26 Apr, 2025 (E)Air Pollution
  5. 5Identify the principle suggesting to avoid protection and deprotection of selective group for organic reactions in green chemistry.23 Apr, 2025 (M)Control of environmental pollution
  6. 6Which of the following is used as Green solvent?22 Apr, 2025 (M)Control of environmental pollution
  7. 7Which of the following is effectively used instead of DDT?22 Apr, 2025 (E)Land Pollution
  8. 8Which of the following principal of green chemistry suggests use of chemicals made from plant based sources?21 Apr, 2025 (M)Control of environmental pollution
  9. 9Which of the following gases causes depletion in ozone layer?21 Apr, 2025 (M)Air Pollution
  10. 10Which of the following is one of the product of ozonolysis at ozone layer in atmosphere?19 Apr, 2025 (M)Air Pollution
  11. 11Which solvent from following is used in order to avoid creation of waste and pollution of air?19 Apr, 2025 (E)Control of environmental pollution
  12. 12Identify one dimensional nanostructure from following.16 May, 2024 (M)Introduction to Nanochemistry
  13. 13What is the percentage atom economy when formula weight of product obtained is 70 u and the sum of formula weight of reactant is 140 u ?11 May, 2024 (M)Control of environmental pollution
  14. 14Identify the instrument used to find the structure of surface of material.10 May, 2024 (M)Introduction to Nanochemistry
  15. 15Which from following reactions exhibits good atom economy according to the principles of green chemistry?10 May, 2024 (E)Control of environmental pollution
  16. 16Which of the following solvents reduces the environmental pollution?09 May, 2024 (M)Water Pollution
  17. 17Which from following polymers is believed to leach human carcinogen in to food when used as household plastic?09 May, 2024 (E)Control of environmental pollution
  18. 18Which is the most commonly used refrigerant Freon-12?09 May, 2024 (E)Air Pollution
  19. 19Which from following statements is NOT true according to principles of green chemistry?03 May, 2024 (M)Control of environmental pollution
  20. 20Which from following nanomaterials has two dimensions less than 100 nm ?02 May, 2024 (E)Introduction to Nanochemistry
  21. 21Calculate the percent atom economy when a product of formula weight is obtained in a chemical reaction using formula weight reactant.14 May, 2023 (M)Control of environmental pollution
  22. 22Which among following statements is NOT true according to principles of green chemistry?10 May, 2023 (M)Control of environmental pollution
  23. 23Which among the following statements is NOT true according to principles of green chemistry?11 Aug, 2022 (M)Control of environmental pollution
  24. 24Which among the following is an example of 2-dimensional nanostructure?08 Aug, 2022 (M)Control of environmental pollution
  25. 25Which among following statements is NOT a principle of green chemistry?06 Aug, 2022 (M)Control of environmental pollution
  26. 26Which among the following statements is against to the principles of green chemistry?05 Aug, 2022 (M)Control of environmental pollution
  27. 27Which among the following statements about ozone depletion is NOT true?21 Sep, 2021 (E)Air Pollution
  28. 28Which of the following is NOT an example of freons?20 Oct, 2020 (E)Air Pollution
  29. 29The tetraethyl lead mixed in petrol works as2012Air Pollution

Frequently Asked Questions

1.How many questions are available for Environmental Chemistry?

This chapter includes 29 questions compiled from MHTCET papers spanning 2012 to 2026.

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

These are MHTCET 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 MHTCET Chemistry?

Environmental Chemistry has appeared in 8 of the 17 years of MHTCET papers covered here, with 29 questions across 26 papers - about one per paper it appears in.

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

Of the 29 questions analysed for this chapter, 59% are easy, 24% moderate and 17% tough. 2025 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:

  • Control of environmental pollution - 16 questions (55%)
  • Air Pollution - 8 questions (28%)
  • Introduction to Nanochemistry - 3 questions (10%)
  • Control of environmental pollution has produced the most tough questions (4).
6.Is Environmental Chemistry's weightage in MHTCET going up or down?

Across all 26 papers analysed, Environmental Chemistry has averaged about 1.1 questions per paper. In the last three years (2024–2026), that average has fallen, at about 0.3 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.