Q.

Assertion : Surface tension decreases with increase in temperature.

Reason : On increasing temperature kinetic energy increases and inermolecular forces decreases.

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a

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

b

If assertion is true but reason is false.
 

c

If both assertion and reason are false.
 

d

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

answer is A.

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Detailed Solution

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

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