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Question
Photochemical smog does not generally contain ______.
Options
NO
NO2
SO2
HCHO
MCQ
Fill in the Blanks
Solution
Photochemical smog does not generally contain SO2.
Explanation:
Nitrogen dioxide (NO2), ozone (O3), PAN (peroxyacetylnitrate), and compounds with a −CHO group are all components of photochemical smog.
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