Q38 / 180 · KCET 2014 · Chemistry
The statement that is NOT correct is
- AVan der Waals constant 'a' measures extent of intermolecular attractive forces for real
gases. - BBoyle point depends on the nature of real gas,
- CCompressibility factor measures the deviation of real gas from ideal behaviour.
- Correct answerDCritical temperature is the lowest temperature at which liquefaction of a gas first occurs.
Solution
Critical temperature is not the lowest temperature at which liquefaction of a gas first occurs. The critical temperature of a
substance is the temperature at and above which vapor of the substance cannot be liquefied no matter how much
pressure is applied. Therefore, statement (4) is incorrect.
substance is the temperature at and above which vapor of the substance cannot be liquefied no matter how much
pressure is applied. Therefore, statement (4) is incorrect.
Hence, the correct answer is option: 'D'.