Which gas is a major source of indoor pollution?
A) carbon dioxide
B) radon
C) nitrous oxide
D) sulfuric acid

Question

Quizplus · Accepted Answer

Radon is a major source of indoor pollution as it is a naturally occurring radioactive gas that can seep into homes through the ground. Carbon dioxide is a naturally occurring gas that is only harmful in high concentrations, which are unlikely to be reached in indoor environments. Nitrous oxide is not typically found in indoor environments in significant concentrations, and sulfuric acid is a pollutant that is not commonly found in homes.

Which Gas Is a Major Source of Indoor Pollution