Multiple choice

Which of the following gases does not cause air pollution?

  1. Sulphur dioxide

  2. Nitrogen

  3. Nitrogen oxide

  4. Carbon monoxide

  5. Hydrogen sulphide
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is the correct option. Nitrogen, though present in the largest quantity in air, does not cause air pollution.

Keep practicing — related questions