Which gas cannot be liquefied?

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Question

(B) An ideal gas can never be liquefied because the intermolecular forces of attraction among the ideal gas molecules are negligible. For an ideal gas

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Which obeys the ideal gas equation at every temperature and pressure

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(B) An ideal gas can never be liquefied because the intermolecular forces of attraction among the ideal gas molecules are negligible. For an ideal gas,the intermolecular forces are considered to be zero. Since liquefaction requires strong intermolecular forces to bring molecules together into a liquid state,a gas that perfectly obeys the ideal gas equation $PV = nRT$ at all temperatures and pressures cannot be liquefied. Correct choice - option $B$.

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