Question

‘Ozone’-hole means:

A. A large sized hole in the ozone layer 

B. Thinning of the ozone layer 

C. Small holes scattered in the ozone layer 

D. Thickening of ozone in the ozone layer

Answer 1

Normally ozone breaks into oxygen under the influence of sunlight, and reforms into ozone again. The ozone hole is created when the rate of formation of ozone is slower than the rate of its depletion. Hence, when the CFCs accumulate in a specific region, ozone depletion becomes faster the rate of its formation ultimately leading to the formation of the ozone hole.