Question

"Ozone at higher levels of the atmosphere is a product of UV radiation acting on
oxygen molecules. However, same UV radiation is responsible for ozone layer
depletion when CFCs act on it.' Comment.​

Answer 1

Answer:

Ozone depletion, gradual thinning of Earth's ozone layer in the upper atmosphere caused by the release of chemical compounds containing gaseous chlorine or bromine from industry and other human activities. The thinning is most pronounced in the polar regions, especially over Antarctica.

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Answer 2

UV rays release chlorine from CFC and that free chlorine destroys the ozone layer.

Explanation:

• In the higher atmosphere ozone is created when the UV radiation strikes O2 molecule and splits it in two O atom. This oxygen atom when collides with O2 molecules it form O3 molecule which is called ozone.

• When CFC reaches in the upper atmosphere UV radiation acts on it and free a chlorine atom from CFC. This chlorine atom when comes in contact with ozone it steals one oxygen atom and destroys ozone.

• Therefore by converting O3 into O2 in the presence of UV rays CFC destroy the ozone layer.

Learn more about ozone:

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