For the production of very high vacuum, a __________ pump is normally used.

Question: “Law of corresponding states” says that
[A].

, two different gases behave similarly, if their reduced properties (i.e. P, V and T) are same.

[B].

the surface of separation (i. e. the meniscus) between liquid and vapour phase disappears at the critical temperature.

[C].

no gas can be liquified above the critical temperature, howsoever high the pressure may be.

[D].

the molar heat of energy of gas at constant volume should be nearly constant (about 3 calories).

Answer: Option A

Explanation:

No answer description available for this question.