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- Photochemical smog is essentially caused by the presence of Option: 1 Sulphur DioxideOption: 2</st
Photochemical smog is essentially caused by the presence of
Option: 1
Sulphur Dioxide
Option: 2
Unsaturated hydrocarbons
Option: 3
Oxides of Nitrogen
Option: 4
Both 2 & 3
Answers (1)
As we have learnt,
causes chemical smog.
Photochemical smog is caused by the presence of unsaturated hydrocarbon and oxides of Nitrogen.
Hence, the correct answer is Option (4)
View full answer
