Home
Class 12
BIOLOGY
Ozone layer of upper atmosphere is being...

Ozone layer of upper atmosphere is being destroyed by

A

chlorofluorocarbons

B

`SO_(2)`

C

`O_(2) " and " CO_(2)`

D

smog.

Text Solution

Verified by Experts

The correct Answer is:
A
CFCs are widely used as refrigerants. CFCs discharged in the lower part of atmosphere move upward and reach stratosphere. In stratosphere, UV rays act on them releasing Cl atoms. Cl degrades ozone releasing molecular oxygen, with these atoms acting merely as catalysts, Cl atoms are not consumed in the reaction. CFCs added to the stratosphere have permanent and continuing affects on ozone levels.
Promotional Banner

Similar Questions

Explore conceptually related problems

Ozone layer in the atmosphere absorbs

Ozone layer in atmosphere is useful, because it

The Ozone layer of troposphere is called:

Ozone layer absorbs……

(I) The ozone layer is also called as ozone hole. (II) Ozone is a colourful gas. (III) The upper layer of ozone is called as bad ozone. (IV) The ozone layer of stratosphere is called as good ozone.

The small ozone layer on top of the stratosphere is crucial for human survival. why ?

Ozone depletion in the atmosphere results in:

The layer of atmosphere which extends upto 10km from sea level is called "_____________" .