Correct statement about smog is
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To differentiate between classical and photochemical smog:
• Classical smog occurs in cool, humid conditions and is reducing in nature.
• Photochemical smog occurs in sunny conditions and contains strong oxidizing agents like ozone.
NO2 is present in classical smog
- Classical smog also has high concentration of oxidizing agents
- Photochemical smog has high concentration of oxidizing agents
Both NO2 and SO2 are present in classical smog
The Correct Option is C
Solution and Explanation
1. Classical Smog:
Also known as "reducing smog."
It is caused by high concentrations of \(\text{SO}_2\) and particulate matter under cool, humid conditions.
Classical smog does not contain oxidizing agents like \(\text{NO}_2\).
2. Photochemical Smog:
Formed in warm, sunny conditions.
It is caused by the reaction of \(\text{NO}_2\) and volatile organic compounds (VOCs) under sunlight, forming ozone and other oxidizing agents.
This type of smog has a high concentration of oxidizing agents like \(\text{O}_3\) and peroxyacetyl nitrate (PAN).
Final Answer: (3) Photochemical smog has a high concentration of oxidizing agents.
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