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 operated between its molecules are negligible

Hint:

Ideal gases do not have intermolecular forces, so they cannot be liquefied.

Answer 1

The Correct Option is D

Step 1: Liquefaction of gases.
For an ideal gas, there are no intermolecular forces, which means it cannot be liquefied by pressure or cooling.
Thus, the correct answer is (4).