Question

Identify the incorrect statement from the following:

• A. Ozone absorbs the intense ultraviolet radiation of the sun.
• B. Depletion of ozone layer is because of its chemical reactions with chlorofluoro alkanes.
• C. Ozone absorbs infrared radiation.
• D. Oxides of nitrogen in the atmosphere can

Answer 1

Answer: (C)

The ozone layer, existing between $20$ to $35km$ above the earth's surface, shield the earth from the harmful U. V. radiations from the sun.
Depletion of ozone is caused by oxides of nitrogen
$N_{2}O+hv⟶\underset{\text{ reactive nitric oxide }}{\mathrm{NO}}+N$
$NO+O_3⟶N{O}_2+O_2$
$O_3+hv⟶O_2+O$
$N{O}_2+O⟶NO+O_2$
$2O_3+hv⟶3O_2$ (Net reaction)
The presence of oxides of nitrogen increase the decomposition of $O_3$.