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Surface tension vanishes at...

Surface tension vanishes at

A

absolute zero temperature

B

transition temperature

C

critical temperature

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
The surface tension of liquids decreases with increases of temperature. For small temperature differences, it decreases almost linearly. The surface tension of a liquid becomes zero at a particular temperature, called the critical temperature of that liquid.
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Knowledge Check

  • Surface tension is

    A
    the work done per unit area in increasing surface area of a liquid under isothermal conditions
    B
    the work done per unit area increasing the surface area of a liquid under adiabatic conditions
    C
    the work done per unit area decreasing the surface area of a liquid under adiabatic conditions
    D
    free surface energy per unit volume

  • Surface tension acts

    A
    only at the free surface of the liquid
    B
    inside the liquid
    C
    at the bottom of the liquid
    D
    at all places of contact between the liquid and the container .

  • Surface tension arises due to

    A
    adhesive force between molecules
    B
    cohesive force between molecules
    C
    gravitational force between molecules
    D
    electrical force between molecules

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