Question

The maximum hole of ozone is found over ______

• A. Arctic zone
• B. Antarctic zone
• C. Tropical zone
• D. Subtropical zone

Answer 1

The correct option is B Antarctic zone

Ozone-depleting substances are present throughout the stratospheric ozone layer because they are transported great distances by atmospheric air motions. 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. Special reactions that occur on PSCs, combined with the relative isolation of polar stratospheric air, allow chlorine and bromine reactions to produce the ozone hole in Antarctic springtime.

So, the correct answer is 'Antarctic zone'.