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At critical temperature, the surface ten...

At critical temperature, the surface tension of a liquid

A

Zero

B

infinite

C

Between 0 and `oo`

D

Can not be determined

Text Solution

Verified by Experts

The correct Answer is:
A
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In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as (a) If both assertion and reason are true and reason is the correct explanation of assertion. (b) If both assertion and reason are true but reason is not the correct explanation of assertion. (c ) If assertion is true but reason is false. (d) If assertion and reason are false. Q. Assertion: At critical temperature, surface tension of a liquid becomes zero. ltbr. Reason: At this temperature intermolecular forces for liquids and gases become equal. Liquid can expand without any restriction.

A : On increasing temperature the angle of contact generally decreases. R: With rise in temperature, the surface tension of liquid increases.

Knowledge Check

  • Assertion : At critical temperature, surface tension of liquids becomes zero. Reason : At critical temperature, intermolecular forces for liquids and gases become equal. Liquids can expand without restriction.

    A
    both Assertion and Reason are true and the Reason in the correct explanation of the Assertion.
    B
    both Assertion and Reason are true but Reason is not a correct explanation of the Assertion.
    C
    Assertion is true but the Reason is false.
    D
    both Assertion and Reason are false.

  • At critical temperature surface tension becomes

    A
    0
    B
    1
    C
    infinite
    D
    negative

  • Statement-1: The angle of contact of a liquid decrease with increase in temeperature Statement-2: With increase in temperature the surface tension of liquid increase.

    A
    Statement-1, is true, Statement-2 is true, Statement-2 is correct explanation for statement-1
    B
    Statement-1 is true, statement-2 is true, statement-2 is NOT a correct explantion for statement-1
    C
    statement-1 is true, statement-2 is false
    D
    statement-1 is false statement-2 is true

    • Similar Questions

    Explore conceptually related problems

    What is the effect of temperature on the surface tension of a liquid ?

    Assertion : The angle of contact of a lilquid with a solid decreases with increase in temperature. Reason : With increase in temperature, the surface tension of the liquid increases.

    With the rise of temperature ,the surface tension of liquid :

    If temperature increases, the surface tension of a liquid

    On increasing temperature, the surface tension

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