Question

secondary pollutants are produced when primary pollutants are released and undergo chemical reactions. which of the following is an example of a secondary pollutant? nitrogen carbon photochemical smog oxygen

Explanation:

• Nitrogen is a primary pollutant.
• Carbon is a primary pollutant.
• Oxygen is not a pollutant.
• Photochemical smog is formed when primary pollutants (like nitrogen oxides and volatile organic compounds) undergo chemical reactions in the presence of sunlight. So it is a secondary pollutant.

Answer:

C. photochemical smog