Liquification of gaseous substances whose critical temperatures are below room temperature requires ____.

High pressure and lowering of temperature (below T_c).

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Low pressure and raising of temperature (above T_c).

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High pressure and raising of temperature (above T_c).

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Low pressure and lowering of temperature (below T_c).

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Solution

The correct option is A
High pressure and lowering of temperature (below T_c).

Liquification of gaseous substances whose critical temperatures are below room temperature requires high pressure and its temperature should be below the critical temperature.The temperature beyond T_c do not yield satisfactory results.

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Similar questions

Liquification of gaseous substances whose critical temperatures are below room temperature requires ____.

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.

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 gas can be easily liquefied at any temperature below its critical temperature. Reason: Liquification of a gas takes place when the average kinetic energy of the molecules is low.

Q. Assertion: At critical point the densities of substance in gaseous and liquid states are same.
Reason: Critical temperature is the temperature at which the real gas exhibit ideal behaviour for considerable range of pressure.

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