Question

An ideal gas can't be liquefied because:

• A. its critical temperature is always above $0^{o}C$
• B. its molecules are relatively smaller in size
• C. it solidfies before bocoming a liquid
• D. forces operative between its molecules are negligible

Answer 1

The correct option is D forces operative between its molecules are negligible

Gases can be liquefied by louring the temperature

and increasing the pressure. An ideal gas has

no intermoleclar force of attraction, so it cannot

be liquefied by applying high pressure and decrying

temperature. hence $Ans-D$