Previous year MCQs

Environment & Ecology UPPSC 2018 GS-I
Question

Which among the following is the secondary pollutant?

Answer & Solution

Answer: (Detailed Solution Below)

Option A: Smog

Detailed Solution:

The correct answer is “Smog”.
Smog is a secondary pollutant. It is formed when primary pollutants like nitrogen oxides and volatile organic compounds react with sunlight and other atmospheric conditions.

This chemical reaction creates a hazy mixture of pollutants that can be harmful to human health and the environment.

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