1.

Assertion. The depression in freezing point depend on the amount of the solute dissolved and not one the nature of the solute or solvent. Reason. K_(f) for both has different values.

Answer»

If both assertion and reason are true, and reason is the true EXPLANATION of the assertion.
If both assertion and reason are true, but reason is not the true explanation of the assertion.
If assertion is true, but reason is false.
If both assertion and reason are false.

Solution :CORRECT A. The DEPRESSION in freezing point DEPENDS upon the nature of the solvent (because different solvents have different value of `K_(f)`).
Correct R. For aqueous solutions of different ELECTROLYTES, `K_(f)` is same because solvent is same, i.e., water.


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