Home
Class 11
PHYSICS
Assertion : A gas can be liquified at a...

Assertion : A gas can be liquified at any temperature by increase of pressure alone.
Reason : On increasing pressure the temperature of gas decreases

A

If both assertion and reason are true and the reason is the correct explanation of the assertion

B

If both assertion and reason are true but reason is not the correct explanation of the assertion

C

If assertion is true but reason is false.

D

If the assertion and reason both are false.

Text Solution

Verified by Experts

The correct Answer is:
D
A vapour above the critical temperature is a gas and gas below the critical temperature for the substance is a vapour. As gas cannot be liquefied by the application of pressure alone, how so ever large the pressure may be while vapour can be liquefied under pressure alone. To liquefy a gas it must be cooled upto or below its critical temperature.
Promotional Banner

Topper's Solved these Questions

  • KINETIC THEORY OF GASES

    ERRORLESS|Exercise PAST YEARS QUESTIONS|28 Videos

  • GRAVITATION

    ERRORLESS|Exercise Assertion and Reason |25 Videos

  • MOTION IN ONE DIMENSION

    ERRORLESS|Exercise ASSERTION AND REASON|24 Videos

Similar Questions

Explore conceptually related problems

What is critical temperature? Can a gas be liquefied at any temperature by increasing its pressure?

Assertion: Water boils at higher temperature in pressure cooker. Reason: Increase in pressure leads to an increase in boiling temperature.

Assertion : If pressure is increased , bulk modulus of gases will increase. Reason : With increase in pressure , temperature of gases also increases .

A gas can be liquefied by pressure alone when its temperature

At constant temperature on increasing the pressure of a gas by 5% will decrease its volume by -

Assertion : Surface tensian decreases with increase in temperature. Reason : On increasing temperature kinetio energy increases and intermolecular forces decreases.

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.

Assertion : Rate of radioactivity cannot be increased or decreased by increasing or decreasing pressure or temperatur. Reason : Rate depends on the number of nuclei present in the radioactive sample.

Assertion:Pressure is exerted by gas in a container with increasing temperature of the gas. Reason: With the rise in temperature, the average speed of gas molecules increases.