Assertion :Viscosity of liquids decreases as the temperature rises. Reason: At high temperature, molecules have high kinetic energy and can overcome the intermolecular forces to flow faster.

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
When the liquid is heated the viscosity of liquid decreases. As temperature increases, there is an increase in molecular interchange as the molecules speed increases with rising in temperature. At high temperature, molecules posses high kinetic energy and thus it can overcome the intermolecular forces to flow faster.

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Similar questions

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Reason (R) Only those collisions in which molecules have correct orientation and sufficient kinetic energy lead to compound formation.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
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Reason (R) They can form intermolecular hydrogen-bonding.
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