Environmental Chemistry Ques 6
6. Which one of the following statements regarding photochemical smog is not correct?
[2012]
(a) Carbon monoxide does play a role in photochemical smog formation.
(b) Photochemical smog is a mixture of oxidizing agents.
(c) Photochemical smog is formed through photochemical reaction involving solar energy.
(d) Photochemical smog does cause irritation in eyes and throat.
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Solution:
(d) The oxidised hydrocarbons and ozone in presence of humidity cause photochemical smog.
Hydrocarbons $+O_2, NO_2, NO, O, O_3$ $arrow$ Peroxides, formaldehyde, peroxyacetylnitrate (PAN), acrolein etc.
It is oxidising in nature and causes irritation to eyes, lungs, nose, asthma attacks and damage to plants.
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