Assertion : Surface tension decreases with increase in temperature.Reason : On increasing temperature kinetic energy increases and inermolecular forces decreases.

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If both assertion and reason are true and reason is a true explanation of assertion.

If both assertion and reason are true but reason is not the correct explanation of assertion

If assertion is true but reason is false.

If both assertion and reason are false.

answer is A.

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Detailed Solution

On increasing the temperature , intermoleculer seperation increases and hence intermoiecular force of attraction deceases .

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