Question:
Which one of the following statements related to photochemical smog is not correct?
Which one of the following statements related to photochemical smog is not correct?
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Photochemical smog: NO$_x$, O$_3$, VOCs + sunlight. Not primarily SO$_2$.
Updated On: Jun 5, 2025
- It is controlled by the use of catalytic converters in automobiles.
- It causes corrosion of metals.
- It is a mixture of SO$_2$, smoke, and fog.
- It causes extensive damage to plant life.
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The Correct Option is C
Solution and Explanation
Photochemical smog is primarily a mixture of nitrogen oxides (NO$_x$), ozone (O$_3$), volatile organic compounds (VOCs), and other pollutants. It is formed by the action of sunlight on these pollutants. While SO$_2$ can contribute to other types of smog (like industrial smog), it is not a primary component of photochemical smog. The other options are true: catalytic converters help reduce NO$_x$ emissions, photochemical smog can corrode metals, and it can damage plant life.
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