A\xa0colloid\xa0is a heterogeneous mixture whose particles are not as small as solution but they are so small that cannot be seen by naked eye. When a beam of light is passed through a\xa0colloid\xa0then the path of the light becomes visible. For example milk, smoke etc.
Colloids\tA colloid is a kind of solution in which the size of solute particles is intermediate between those in true solutions and those in suspensions.\tFor Example: – Soap solution, Milk, Ink, Blood and solutions of synthetic detergents.