MPSC Pollution & Climate Change — Previous Year Questions

Maharashtra Public Service Commission has asked 9 questions on Pollution & Climate Change across 4 papers (2021–2025). Every one is solved below — open a question for the answer, why it is right, and why each wrong option was written to tempt you.

1. 2025Q31Match the pollutants given in List – I with their effects given in List – II. List – I Pollutants a. Phosphate fertilizers in water b. Methane in air c. Synthetic detergents in water d. Nitrogen oxides in air List – II Effects of Pollutants i. Biochemical oxygen demand level increase ii. Acid Rain iii. Global warming iv. EutrophicationAnswer: B
2. 2025Q42Which one of the following National Mission was not included in the National Climate Action Program ?Answer: D
3. 2024Q31Which geological evidence supports the notion that climate change is a natural and continuous process ?Answer: D
4. 2024Q35PAN (Peroxyacetyl nitrate) is formed as a result of following interaction :Answer: C
5. 2023Q18In relation to Ozone which statements are true ? A. Ozone is called protection shield of the Earth. B. In 1985 it was clear that Ozone layer has holes. C. 16th September is celebrated as World Ozone Day. D. In 1989 chemicals responsible for Ozone depletion are banned to utilize.Answer: D
6. 2021Q32Basel convention an international treaty designed to reduce movement of hazardous waste from developed to less developed countries signed in ________ at ________.Answer: D
7. 2021Q33Green Dot Programme means recycling of industrial polluted water began in which country?Answer: B
8. 2021Q35Which of the following are ecological impacts of ozone depletion ? (a) Damage human immune system (b) Stunted growth of the plants (c) Rise of temperature (d) Causes cataractsAnswer: D
9. 2021Q93Paul J. Crutzen, who often used the term 'Anthropocene' and who won the Nobel Prize for Chemistry in year 1995, was a citizen of :Answer: A