Question

Two identical tubes A and B held horizontally contain air and water, respectively. A small quantity of colored gas is introduced at one end of A while a small quantity of colored water is introduced at one end of B. State with reason the tube in which the color will reach the other end faster.

A. Tube A; gas particles move faster than water particles.
B. Tube B; water molecules have higher mobility than gas particles.
C. Tube A; gas diffusion is more rapid than water diffusion.
D. Tube B; water displacement is quicker than gas propagation.

Answer 1

Tube A with gas will show color reaching the other end faster than tube B with water due to quicker gas diffusion.

Step-by-step explanation:

The tube in which the color will reach the other end faster is tube A, where the colored gas is introduced. The reason for this is that diffusion of gas particles happens more rapidly than that of water molecules due to the random and quicker motion of gas particles compared to those in a liquid. Since gas molecules move with greater speeds and have more space between them, they can disperse much more quickly than water molecules, which are more closely packed and move less rapidly.