Secondary air pollutant is:

Q. Secondary air pollutant is:

A

Ozone

B

Carbon Monoxide

C

Nitrogen Dioxide

D

Sulphur dioxide

Solution:

Secondary pollutants are pollutants which form in the atmosphere.
These pollutants are not emitted directly from a source (like vehicles or power plants).
Secondary pollutants are certain gases that are synthesized by photochemical reactions in the lower atmosphere.
Some important secondary pollutants, most notably ozone, peroxy acetyl nitrate, hydrogen peroxide and aldehydes.
Ozone is formed when hydrocarbons (HC) and nitrogen oxides (NOx) combine in the presence of sunlight

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