Kerala State PSC Exam Model Paper 3

Question : 8 of 100

Marks: +1, -0

"Law of corresponding states" says that

the surface of separation (i. e. the meniscus) between liquid and vapour phase disappears at the critical temperature.
, two different gases behave similarly, if their reduced properties (i.e. P, V and T) are same.
the molar heat of energy of gas at constant volume should be nearly constant (about 3 calories).
no gas can be liquified above the critical temperature, howsoever high the pressure may be.

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