Question

which of the following is not an example of particulate matter? soot dust smoke carbon monoxide

Explanation:

Particulate matter consists of tiny solid or liquid particles suspended in a gas. Soot, dust, and smoke are all examples of particulate matter as they are made of solid particles. Carbon monoxide (CO) is a gaseous compound, not a particulate (it's a molecule, not a solid/liquid particle suspended).

Answer:

D. carbon monoxide