(D) Critical temperature $(T_c)$ is defined as the temperature above which a gas cannot be liquefied,regardless of the pressure applied. It is not the

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Critical temperature is the lowest temperature at which liquefaction of a gas first occurs.

(D) Critical temperature $(T_c)$ is defined as the temperature above which a gas cannot be liquefied,regardless of the pressure applied. It is not the lowest temperature at which liquefaction occurs; rather,it is the maximum temperature at which a gas can exist as a liquid. Therefore,statement $(D)$ is incorrect.

Class 11 Chemistry States of Matter Critical state and Liquefaction of gases

Difficult

The statement that is $NOT$ correct is

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A
Van der Waals constant '$a$' measures extent of intermolecular attractive forces for real gases.
B
Boyle point depends on the nature of real gas.
C
Compressibility factor measures the deviation of real gas from ideal behaviour.
D
Critical temperature is the lowest temperature at which liquefaction of a gas first occurs.