Question

An excess of nonmetallic oxides in air is harmful.

• A. True
• B. False

Answer 1

The correct option is A True

Oxygen reacts with nonmetals to form oxides. When there is an excess of these in air due to pollution, then we have a problem.

Because when it rains, these get mixed with the rain water and form acids. Sulfur forms sulfur dioxide and sulfur trioxide, nitrogen forms many compounds like $NO,N_{2}O,N{O}_2,N_2{O}_5$ which are called $NOx$ together. These are not very strong but they can have certain harmful effects like damage to building, plants and even to human skin.