Assertion :On heating, a solid usually changes to a liquid and the liquid on further heating changes to the gaseous state. Reason: Arrangement of constituent particles is different in solid, liquid and gaseous state.

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 B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
On heating, a solid usually changes to a liquid and the liquid on further heating changes to the gaseous state. This is because heating increases the energy of the system, that results in a decrease in intermolecular interactions and increases the intermolecular distance.

The arrangement of constituent particles is different in solid, liquid and gases.
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

Hence, option $B$ is correct.

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