Assertion :When mercuric iodide is added to the aqueous solution of $K I$ , the freezing point is raised.
Reason: $H g I_{2}$ reacts with $K I$ forming complex ion $[H g I_{4}]^{2 -}$ .

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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