Question

why milk is called a colloid give examples

Answer 1

Dear student!
The milk has all the properties of a colloidal solution so milk is a colloid of liquid in liquid and known as an emulsion. Actually, it shows the tyndall effect but since it is very condensed and concentrated solution so the effect is not visible but the protein molecules in milk are of colloidal size and consequently a drop of milk mixed into water will cause a light beam traversing the solution to be scattered.