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Ozone layer in upper atmosphere (stratos...

Ozone layer in upper atmosphere (stratosphere) is destroyed by :

A

Hydrochloric acid

B

Photochemical smog

C

Chlorofluoro carbon (CFC) and Nitrogen Oxide

D

Sulphur dioxide

Text Solution

Verified by Experts

The correct Answer is:
C
Chlorofluorocarbon is widely used as refrigerant. CFC discharges in the lower part of the atmosphere move upward and reach stratosphere. In the stratosphere, UV rays act on them for releasing Cl atoms. Chlorine reacts with ozone converting into oxygen. Thus CFC have permanent and continuing effects on ozone levels.
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