Question

Nitrogen oxides are emitted from high temperature combustion reactions. Nitrogen oxides are an example of _______.

a. primary pollutants
b. secondary pollutants
c. tertiary pollutants
d. none of the above

Answer 1

Nitrogen oxides are an example of secondary pollutants that are formed through reactions between primary pollutants and normal atmospheric compounds.

Step-by-step explanation:

Nitrogen oxides are an example of secondary pollutants. Secondary pollutants are produced through reactions between primary pollutants and normal atmospheric compounds. For example, ground-level ozone forms over urban areas through reactions, powered by sunlight, between primary pollutants (oxides of nitrogen) and other atmospheric gases such as VOCs.

Answer 2

The correct answer in this question is option B. Nitrogen oxides are an example of secondary pollutants. A secondary pollutant when emitted directly is not harmful. When it combines with other pollutants, it will lead to damage in the environment such as acid rain.