Question

The rate of difusion is

• A. faster in solids than in liquids and gases
• B. faster in liquids than in solids and gases
• C. equal to solids, liquids and gases
• D. faster in gases than in liquids and solids.

Answer 1

Answer: (D)

faster in gases than in liquids and solids.

Answer 2

: Rate of diffusion, $r\propto \sqrt{\rho }$ where p is the density. As density is least of gases than solids and liquids, hence rate of diffusion of gases is faster than in liquids and solids.