Which of the following chemicals is NOT involved in photochemical smog formation

Options

A. `SO_2`
B. `O_3`
C. `NO_2`
D. NO

Answer

A

Explanation

Photochemical smog, reffer to summer smog reaction of sunlight, nitrogen oxide and volatile organic compounds in atmosphere.
(i) `NO+O_(2)rarr NO_(2)`
(ii) `NO_(2) (g) overset("lrv")rarr NO(g) +[O]`
(iii) `[O]+O_(2)rarrO_(3)`
(iv) `O_(3)+NOrarr NO_(2)+O_(2)`
`underset(" Nitrogen oxides ")(2NO_(2))+ underset(" Water ") (H_(2)O)rarrunderset(" Nitrous acid ")(HNO_(2))+underset(" Nitric acid ")(HNO_(3))`