Question

An ideal gas can't be liquefied because

(a) its critical temperature is always above 0°C

(b) its molecules are relatively smaller in size

(c) it solidifies before becoming a liquid

(d) forces operative between its molecules are negligible

Answer 1

The correct option is : (d) forces operative between its molecules are negligible

Explanation:

In an ideal gas, the intermolecular forces of attraction are negligible and hence it cannot be liquefied.