A real gas can be liquefied:

under adiabatic expansion

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above critical temperature

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when cooled below critical temperature under apply pressure

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at temperature lower than critical temperature at pressure higher than critical pressure

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Solution

The correct option is D at temperature lower than critical temperature at pressure higher than critical pressure
A real gas can be liquefied when cooled below critical temperature under application of pressure.

The critical temperature of a gas is the temperature below which it can be liquefied by the application of pressure.

The critical pressure is the pressure that must be applied on 1 mole of gas to liquefy it at its critical temperature.

$V_{c} = 3 b, P_{c} = \frac{a}{27 b^{2}}, T_{c} = \frac{8 a}{27 R b}$

Hence, the correct option is $D$

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Similar questions

Q. Assertion :A gas with higher critical temperature is adsorbed more than a gas with lower critical temperature. Reason: Higher critical temperature implies that the gas is more easily liquefiable.

Consider the following statements.

I. Gaseous substances whose critical temperatures are above room temperatures can be liquefied by applying sufficient pressure to the gas.

II. Gaseous substances whose critical temperatures are below room temperature can be liquefied by the application of pressure and lowering of temperature below $T_{c}$ .

Select the correct alternate.

Q. The critical temperature of a gas is the temperature above which a gas cannot be liquefied, if pressure is less than critical pressure.If this is true enter 1, if false enter 0.

Consider the following statements.

I. Gaseous substances whose critical temperatures are above room temperatures can be liquefied by applying sufficient pressure to the gas.

II. Gaseous substances whose critical temperatures are below room temperature can be liquefied by the application of pressure and lowering of temperature below $T_{c}$ .

Select the correct alternate.

Q. Assertion (A): Real gases tend to behave as ideal gas at low pressure and high Temperature.
Reason (R): At temperature more than critical temperature, a gas can’t be liquefied just by increasing the pressure. Which of the followings is correct?

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