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Question

The molecule that has minimum/no role in the formation of photochemical smog is:
  1. CH2=O
  2. O3
  3. NO
  4. N2

A
N2
B
NO
C
O3
D
CH2=O
Solution
Verified by Toppr

Chiefly NO2,O3 and hydrocarbon is responsible for the build-up smog.
Apart from these other compounds which are responsible for photochemical smog is HCHO,O3, and NO.

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