Question
Which atmospheric gas is primary ingredient of photochemical smog?
The correct answer is
Ozone
Ground-level ozone is a major component of photochemical smog. It forms through sunlight-driven reactions involving nitrogen oxides and volatile organic compounds, so it is a secondary pollutant even though it is a principal smog ingredient.
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Important Questions from Miscellaneous
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List-I
(Relief Materials)List-II
(Color Code)A. Shelter I. Yellow B. Clothes II. Khaki C. Food III. Red D. Medicine IV. Brown
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