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The term 'brown air' is used for

This question belongs to General Knowledge Chemistry
Chemistry
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The term 'brown air' is used for

Answer & Solution
Correct Answer: Option B
Photochemical smog which is mainly composed of ozone (O3), Peroxyacetyl nitrate (PAN) and Nox, is also known as brown air where solar radiation is intense. In seasons of lesser solar radiation or areas, smog formation is incomplete and the air is referred to as grey air.
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