Tag: allotropy of oxygen

Ozone layer depletion is caused due to CFC's. So, chlorine nitrate, which is found in the stratosphere causes break down of the ozone layer. Chlorine is highly reactive and it interacts with ozone and hence destroys the ozone layer.

Freons are chlorofluorocarbons and are responsible for depletion of ozone layer. 

The severe depletion of the Antarctic ozone layer known as the ozone hole occurs because of the special atmospheric and chemical conditions that exist there and nowhere else on the globe. The very low winter temperatures in the Antarctic stratosphere cause polar stratospheric clouds (PSCs) to form. These clouds contain Chlorine nitrate $(ClNO _3)$

Option (B) is correct.

Ozone layer of stratosphere require protection from indiscriminate use of aerosols and high flying jet because they produce gases which react with ozone layer and depletion of ozone occurs.

Chlorofluorocarbon is responsible for the depletion of ozone layer.

UV radiation from the sun on reaction produces ozone.

The proposal to ban supersonic jet planes in Russia is because of toxic gases which reacts with ozone layer and damage it.

Ozone is a greenhouse gas that absorbs and emits radiant energy within thermal infrared range. The increase in ozone in the troposphere because of surface pollution gases have increased the warming effect on the earth's surface and contributed to a greenhouse effect.