Question

For every gas there is a certain temperature above which it cannot be liquefied . Is this statement correct

Answer 1

Gases become more difficult to liquefy as the temperature increases because the kinetic energies of the particles that make up the gasalso increase. The critical temperature of a substance is the temperature at and above which vapor of the substance cannot be liquefied, no matter how much pressure is applied.

Answer 2

Gases can be converted to liquids by compressingthe gas at a apropriate or suitable temperature. The critical temperature of a substance is the temperature at and above which vapor of the substance cannot be liquefied, no matter how much pressure is applied. So, in other words,yes,this statement is correct

Hope this helps you.