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At critical temperature, the surface ten...

At critical temperature, the surface tension of a liquid

A

zero

B

infinity

C

the same as that at any other temperature

D

cannot be determined

Text Solution

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The correct Answer is:
A
The surface tension of liquid at critical temperature is zero.
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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.

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.

At critical temperature surface tension becomes

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

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.

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.

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

If temperature increases, the surface tension of a liquid

MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-SURFACE TENSION -Exercise 2 (Miscellaneous Problems)
  1. The ratio of radii of two bubbles is 2 : 1. What is the ratio of exces...

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  2. 16cm^(3) of water flows per second through a capillary tube of radius ...

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  3. At critical temperature, the surface tension of a liquid

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  4. The rate of flow of liquid through a capillary tube of radius r is V, ...

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  5. A frame made of metallic wire enclosing a surface area A is covered wi...

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  6. Two spherical soap bubbles of radii a and b in vacuum coalesce under i...

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  7. The air pressure inside a soap bubbles of radius R exceeds the out sid...

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  8. On mixing the salt in water, the surface tension of water will

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  9. Two capillary tubes of radii 0.2 cm and 0.4 cm are dipped in the same ...

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  10. By inserting a capillary tube upto a depth l in water, the water rises...

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  11. A wire of length L metres, made of a material of specific gravity 8 is...

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  12. A soap bubble in air (two surfaces) has surface tension 0.03 Nm^(-1). ...

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  13. If a liquid is placed in a vertical cylinerical vessel and the vessel ...

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  14. Water rises in a capillary tube to a height h. It will rise to a heigh...

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  15. The radius of a spherical drop of water is 1 mm. If surface tension of...

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  16. What is ratio of surface energy of 1 small drop and 1 large drop, if 1...

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  17. Water rises to a height of 10.3 cm in a capilaary of height 18 cm abov...

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  18. Water rises to a height of 10 cm in a capillary tube and mercury falls...

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  19. The amount of work done in blowing a soap bubble such that its diamete...

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  20. A vessel, whose bottom has round holes with diameter of 0.1 mm , is fi...

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