environment easy MCQ

Which of the following is a common indoor air pollutant from burning solid fuels?

  1. Oxygen
  2. Carbon monoxide
  3. Nitrogen
  4. Argon

Answer: Carbon monoxide

Incomplete combustion of biomass fuels releases CO, a colorless, odorless gas that reduces blood oxygen-carrying capacity, causing health hazards.

Topic Environmental Health
Exam Relevance SSC, Railway
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