KCET · Chemistry · p Block Elements (Group 15, 16, 17 & 18)
The statement that is NOT correct is
- 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.
Answer & Solution
Correct Answer
(D) Critical temperature is the lowest temperature at which liquefaction of a gas first occurs.
Step-by-step Solution
Detailed explanation
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.
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