A) ozone
B) nitrogen dioxide
C) carbon dioxide
D) PAN
Correct Answer: C
Solution :
Photochemical smog is highly oxidizing polluted atmosphere comprising largely of ozone\[({{O}_{3}})\], oxides of nitrogen\[(N{{O}_{x}})\], hydrogen peroxide\[({{H}_{2}}{{O}_{2}})\], organic peroxides, peroxy acetyl nitrate (PAN) and peroxy benzyl nitrate \[(P{{B}_{z}}N)\]. Some sulphates and nitrates can also be formed in photochemical smog due to oxidation of sulphur containing components \[(S{{O}_{2}},{{H}_{2}}S)\] and \[N{{O}_{x}}({{N}_{2}}{{O}_{5}},N{{O}_{2}})\] but it does not contain \[C{{O}_{2}}\]. Photochemical smog materials cause damage to plants, human health, hazards and corrosion problems.
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