Ozone layer — task. Science CBSE Homework Assignments, Class 10.

Section A: Choose the correct answer for the given question from the options.

20. Assertion (A): : Ozone layer protects the surface of the Earth from harmful UV radiations.
Reason (R):Chlorofluorocarbons (CFCs) are responsible for depletion of the ozone layer.

Assertion (A) is false and Reason (R) is true.
Both Assertion (A) and Reason (R) are the true but Reason (R) is not a correct explanation of Assertion (A).
Both Assertion (A) and Reason (R) are the true and Reason (R) is a correct explanation of Assertion (A).
Assertion (A) is true and Reason (R) is false.

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1. Ozone layer

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