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  9. Q153

JPSC 2021 · Question 153 of 198

Which of the following causes maximum indoor chemical pollution?

Environment

  1. ARoom spray
  2. BBurning mosquito coil
  3. CBurning coalCorrect
  4. DBurning cooking gas

Answer: C. Burning coal

Explanation

Burning coal indoors releases particulates, CO, benzene and formaldehyde - the largest source of indoor chemical pollution among the options (also confirmed by testbook's JPSC notes).

Source: JPSC Combined Civil Services (PT) 2021 (Advt 01/2021, held 19 Sep 2021), GS Paper-I (General Studies), Booklet Series-A; answers per official REVISED answer key (published 08 Oct 2021 on jpsc.gov.in, via JagranJosh), each cross-checked against factual records; Paper-I Q55.

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