Which of the following are among the biggest sources of particulate matter in indoor air pollution?

Question

Quizplus · Accepted Answer

House dust and tobacco smoke are significant sources of particulate matter in indoor air pollution. Carbon monoxide and carbon dioxide are gases and not particulate matter. Paints and varnishes may release volatile organic compounds (VOCs) but not necessarily particulate matter. Radon and formaldehyde are also not particulate matter.

Which of the Following Are Among the Biggest Sources of Particulate