Q.

Which of the following is produced during the formation of photochemical smog?

A. Nitrogen Oxides
B. Hydrocarbons
C. Methane
D. Ozone
Answer» D. Ozone
Explanation: Ozone is produced during the formation of photochemical smog. Photochemical smog is a mixture of pollutants that are formed when nitrogen oxides and volatile organic compounds (VOCs) react to sunlight, creating a brown haze above cities.

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