Question

What are the two main categories of air pollutants?

Answer 1

Air pollutants: These are the toxic pollutants that cause contamination of the air.

The two main categories of air pollutants are as follows:

1. Gaseous air pollutants: These are gaseous materials that include various gases and vapors of volatile or evaporating substances or compounds that have a boiling point below 200°C. They include oxides of nitrogen, sulfur, harmful fumes, etc.
2. Particulate: These include small or microscopic dust particles, carbon particles, and particles of other metals that cause serious respiratory or other diseases.