1.

Assertion:- Boric acid cannot be titrated with NaOH solution. Reason:- Cupellation is the process used to remove silver impurity from Pb. Reason:- This method is used when metal is easily oxidised by air but oxidation of impurity is not possible.

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 :B


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