1.

Assertion : Molar mass of D_(2)O is more than than of protium oxide. Reason : Boiling point of protium oxide is higher than that of D_(2)O.

Answer»

If both ASSERTION & REASON are TRUE & the Reason is a correct explanation of the Assertion.
If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.
If Assertion is True but the Reason is False.
If both Assertion & Reason are False.

Answer :C


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