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Question 850007
JEE Chemistry · Hard

States of Matter and Gaseous State: Critical phenomena MCQ

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Critical phenomenaHardQuestion 850007

Question

Above the critical temperature (Tc), a gas:
  1. A
    Cannot be liquefied regardless of pressure
    Correct
  2. B
    Liquefies at any pressure
  3. C
    Solidifies
  4. D
    Becomes ideal

Correct answer

Cannot be liquefied regardless of pressure

Explanation

Above Tc, the distinction between gas and liquid disappears. No amount of pressure can liquefy the gas above Tc. Below Tc, sufficient pressure can liquefy a gas (vapour).

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