Given below are two statements, one labelled as Assertion A and the other as Reason R. In the light of the above statements, choose the most appropriate answer from the options given below.
Assertion (A):Chlorofluorocarbons (CFCs) are potent greenhouse gases.
Reason (R):CFCs have the ability to catalytically destroy ozone in the stratosphere.
ABoth A and R are correct and R is the correct explanation of A
BBoth A and R are correct but R is not the correct explanation of A ✓ Correct
CA is correct but R is not correct
DA is not correct but R is correct
Correct answer: (B) Both A and R are correct but R is not the correct explanation of A
Explanation
Chlorofluorocarbons are potent greenhouse gases, so Assertion A is correct.
They trap outgoing heat far more effectively than carbon dioxide per molecule.
The Reason is also correct, as CFCs catalytically destroy ozone in the stratosphere.
But ozone destruction is a separate process from trapping heat, so the Reason does not explain the Assertion.
Their greenhouse strength comes from directly absorbing infrared radiation.
The Montreal Protocol curbed CFCs to protect the ozone layer.
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