(1) If both Assertion (A) and Reason (R) are True and the Reason (R) is a correct explanation of...

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(1) If both Assertion (A) and Reason (R) are True and the Reason (R) is a correct explanation of the Assertion (A).
(2) If both Assertion (A) and Reason (R) are True but Reason (R) is not a correct explanation of the Assertion (A).
-(3) If Assertion (A) is True but the Reason (R) is False.
_(4) Assertion (A) is False but Reason (R) is True.
- Assertion (A): For calculating the molality or the mole fraction of solute, if the molarity is known, it is necessary to know the density of the solution.

Reason (R): Molality, molarity and the mole fraction of solute can be calculated from the weight percentage and the density of the solution.
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