0·1 M sucrose solution has higher depression in the freezing point than 0·1 M urea solution.

Assertion: $0\cdot1\text{ M}$ sucrose solution has higher depression in the freezing point than $0\cdot1\text{ M}$ urea solution.

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

(a)Both Assertion and Reason are true and Reason is the correct explanation for Assertion.
(b)Both Assertion and Reason are true but Reason is not the correct explanation for Assertion.
(c)Assertion is true and Reason is false.
(d)Both Assertion and Reason are false.

Answer

Official answer key

Correct option: (d)

Answer: (d) Both Assertion and Reason are false. Depression in freezing point is a colligative property (Reason is false). Equimolar sucrose and urea solutions are non-electrolytes with the same number of particles, so their depressions are equal (Assertion is false).