Assertion :Due to Frenkel defect, density of the crystalline solid decreases. Reason: In Frenkel defect, cation or anion leaves the crystal.

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 D Both Assertion and Reason are incorrect
Due to Frenkel defect, density of the crystalline solid is not affected as there is no change in the mass or volume of crystal.
In Frenkel defect, cation or anion leaves its regular site and moves to occupy interstitial position in the crystal.
Both Assertion and Reason are incorrect.

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