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Chemistry · 2024 · 1 mark
CBSE 2024 · Region 1 · Set 1 · Q13
Assertion (A): When NaCl is added to water a depression in freezing point is observed. Reason (R): NaCl undergoes dissociation in water.
Assertion (A) : When NaCl is added to water a depression in freezing point is observed. Reason $\displaystyle (R)$ : $\displaystyle \mathrm{NaCl}$ undergoes dissociation in water.
Official answer
(B)
Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
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CBSE Class 12 Chemistry past-paper question from the 2024 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.