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Assertion : At critical temperature, sur...

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

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

Text Solution

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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.

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ALLEN-ELASTICITY, SURFACE TENSION AND FLUID MECHANICS-Exercise 3 (Assertion & Reason)
  1. Statement-1: In gravity free space, the liqid in a capillary tube will...

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  2. Statement-1: It is better to wash the clothes in cold soap solution. ...

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  3. Statement-1: A gas filled balloon stops rising after it has attained a...

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  4. Statement-1: A parachute descends slowly whereas a stone dropped from ...

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  5. Statement-1: hot soup tastes better than the cold soup. Statement-2:...

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  6. Statement-1: Roofs of buildings are blown off during a strong storm. ...

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  7. Statement-1: The stream of water emerging from a wate tap "necks down"...

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  8. Statement-1: As wind flows left to right and a ball is spined as shown...

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  9. Statement-1: A block is immersed in a liquid inside a beaker which is ...

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  10. Statement-1: An ice cube is floating in water in a vessel at 0^(@)C wh...

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  11. Statement-1: Leaves and small insects float on the surface of water bu...

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  12. Statement-1: Weight of a empty balloon measured in air is w(1). If air...

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  13. Statement-1: The stretching of a coil is determined by its shear modul...

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  14. Assertion : At critical temperature, surface tension of liquids become...

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  15. Statement -1 : A large soap bubble expands while a small bubble shrink...

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  16. Statement-1: The size of a hydrogen increases as it rises in air. St...

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  17. Statement I: Smaller drops of liquid resist deforming forces better th...

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  18. Assertion : Specific gravity of a fluid is a dimensionless quantity. ...

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  19. Statement-1: For reynold number R(e)gt2000 the flow of fluid is turbul...

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  20. Statement-1: A thin stainless steel needle can lay floating on a still...

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