environment medium MCQ

Which of the following is a volatile organic compound (VOC) commonly found in indoor air?

  1. Oxygen
  2. Formaldehyde
  3. Nitrogen
  4. Argon

Answer: Formaldehyde

Formaldehyde, emitted from paints, adhesives, and furniture, is a VOC that can cause respiratory irritation and is classified as a carcinogen.

Topic Environmental Chemistry
Exam Relevance UPSC, SSC
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