Question

Assertion: 0.1 M sucrose solution has higher depression in the freezing point than 0.1 M urea solution.

Reason: Depression in freezing point is not a colligative property.

Options

• Both Assertion and Reason are true and Reason is the correct explanation for Assertion.

• Both Assertion and Reason are true but Reason is not the correct explanation for Assertion.

• Assertion is true and Reason is false.

• Both Assertion and Reason are false.

Answer 1

Both Assertion and Reason are false.

Explanation:

The assertion is false because freezing point depression depends on molality (ΔT_f = K_fm). Here, urea is given as 0.1 m, while sucrose is 0.1 M, and 0.1 m generally produces a greater depression than 0.1 M. The reason is also false because depression at the freezing point is a collative property. Hence, both Assertion and Reason are false.