Answer: Option (a) is the correct answer.
Explanation:
Particles of a gas are held by weak Vander waal forces due to which they have more kinetic energy. This leads to more number of collisions between gas particles.
As a result, gases readily diffuse in their surroundings.
On the other hand, molecules of a liquid are more closer as compared to molecules of a gas. So, they have less kinetic energy as compared to gas molecules. Hence, liquids are not able to diffuse into their surroundings.
Thus, we can conclude that gases diffuse faster than liquids because gas particles have more kinetic energy.
