Question : State one important function of ozone layer in the atmosphere. How is it formed there? Which compounds are responsible for the depletion of ozone layer ? How do these compounds enter into the atmosphere ?

Question : State one important function of ozone layer in the atmosphe

1.	Question : State one important function of ozone layer in the atmosphere. How is it formed there? Which compounds are responsible for the depletion of ozone layer ? How do these compounds enter into the atmosphere ?
Answer» Solution : Ozone layer prevents harmful ultraviolet radiations to reach earth.s atmosphere. Ozone is FORMED at the higher level of atmosphere by the action of UV radiations on `O_2` molecule. High energy UV radiations split apart some oxygen molecules into atomic oxygen which react with molecular oxygen to form ozone molecules as shown by the following equations : CHLOROFLUOROCARBONS are responsible for the depletion of ozone layer. These compounds which are used in refrigerators and FIRE extinguishers get leaked during MANUFACTURE or repair and go up high into the atmosphere.