Exams › JEE Main › Chemistry

Given below are the critical temperatures of some of the gases : Gas | Critical temperature (K) He | 5.2 CH4 | 190 CO2 | 304.2 NH3 | 405.5 The gas showing least adsorption on a definite amount of charcoal is :

1. He
2. CH4
3. CO2
4. NH3

Correct answer: He

Solution

Helium (He) has the lowest critical temperature among the gases listed, indicating that it is a lighter and less polarizable gas. This results in weaker intermolecular forces, leading to minimal adsorption on charcoal compared to the other gases.

Related JEE Main Chemistry questions

• At constant temperature, the Freundlich adsorption relation for a gas adsorbed on a solid can be written in terms of the amount adsorbed per unit mass of adsorbent as:
• What is the typical size range of colloidal particles?
• Which of the following is an example of an irreversible colloid when water acts as the dispersion medium?
• Which of the following forms cationic micelles when its concentration exceeds a certain limit?
• In a micelle, how are the polar and non-polar regions arranged?
• What is responsible for Brownian motion?

⚔️ Practice JEE Main Chemistry free + battle 1v1 →