Question:medium

Assertion (A): When NaCl is added to water, a depression in freezing point is observed.
Reason (R): NaCl undergoes dissociation in water.

Show Hint

Colligative properties, such as freezing point depression, depend on the number of solute particles in solution, not on their nature.
Updated On: Jan 13, 2026
  • Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
  • Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
  • Assertion (A) is true, but Reason (R) is false
  • Assertion (A) is false, but Reason (R) is true.
Show Solution

The Correct Option is B

Solution and Explanation

Freezing point depression arises from the colligative properties of the solution. While NaCl dissociates in water, the extent of freezing point depression is determined by the total number of solute particles, not solely by dissociation.
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