Multiple choice

_____is a process of gradual mixing of two substances kept in contact with each other.

  1. Expansion

  2. Diffusion

  3. Deposition

  4. Destruction

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Diffusion is the process of spontaneous movement of particles from an area of higher concentration to an area of lower concentration, resulting in the mixing of substances.