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Question
Which of the followings is incorrect about photochemical smog –
Options:
A .  It is produced in warm, dry and sunny climate
B .  It is oxidizing in nature.
C .  Ozone gas is one of its constituents.
D .  It is formed in stratosphere.
Answer: Option D
:
D
Photochemical smog is formed in troposphere not in stratosphere. It is produced in warm, dry and sunny climate. It's main constituents are O3,NO2 and unsaturated carbons. Ozone is formed due to reaction between NO2 and atmospheric oxygen.
NO2(g)uvNO(g)+O(g)
O(g)+O2(g)O3(g)

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