Assertion (A) : Ozone is destroyed by solar radiation in upper stratosphere. Reason (R): Thinning of the ozone layer allows excessive UV radiations to reach the surface of earth.

Assertion (A) : Ozone is destroyed by solar radiation in upper stratos

1.	Assertion (A) : Ozone is destroyed by solar radiation in upper stratosphere. Reason (R): Thinning of the ozone layer allows excessive UV radiations to reach the surface of earth.
Answer» Both (A) and (R) are correct and (R) is the correct EXPLANATION of (A). Both (A) and (R) are correct but (R) is not the correct explanation of (A). Both (A) and (R) are not correct. (A) is not correct but R is correct. Solution :Ozone layer is found in the stratosphere. The depletion of ozone layer (creation of ozone hole) is taking place due to REACTION with NO. Which produced from natural sources or human activity or in the exhaust gases of engines of supersonic planes or by reaction with chlorofulorocarbons (CFC.s) called freons. Freons produced from AEROSOL SPRAYS used in PROPELLANTS or from refrigerators where they are used as coolants. The ozone hole allows the UV radiations to pass through and reach us, increasing chances of skin cancer.