A) \[{{O}_{3}}\]
B) \[CO\]
C) \[P{{O}_{4}}\]
D) \[C{{H}_{4}}\]
Correct Answer: A
Solution :
Photochemical smog is highly oxidising polluted atmosphere comprising largely of \[{{O}_{3}}\], nitrogen oxide, \[{{H}_{2}}{{O}_{2}}\], organic peroxides, PAN and PB^N. This is produced as a result of photochemical reaction among nitrogen oxide, hydrocarbons and oxygen. The photochemical smog formadon occurred only during night or cloudy days. Phulochemical smog adversely affects plants, human health and materials. The oxidants enter as part of inhaled air and alter, impair or interfere with respiratory process and other processes.
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