A) ozone
B) nitrogen dioxide
C) carbon dioxide
D) PAN (Peroxy Acyl Nitrate)
Correct Answer: C
Solution :
Photochemical smog is highly oxidising 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 containig components \[(S{{O}_{2}},\,{{H}_{2}}S)\] and \[N{{O}_{x}}({{N}_{2}}{{O}_{5}},\,\,N{{O}_{2}})\] but it does not contain carbon di-oxide \[(C{{O}_{2}})\]. Photochemcial smog materials causes damage to plants, human health hazards and corrosion problems.
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