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NEET levelSingle correct optionDifficulty 1 of 3rg091

The critical pressure of a gas is

  1. Athe pressure at which the gas obeys Boyle's law
  2. Bthe minimum pressure required to liquefy the gas at its critical temperature
  3. Cthe pressure at the Boyle temperature
  4. Dthe pressure at which the gas has

Answer: B

At the critical temperature the gas can just be liquefied, and the pressure needed to do so is the critical pressure . At lower temperatures a smaller pressure (the vapour pressure) suffices.
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