Dear students
There is been an slight misunderstanding
Actually milk is a colloidal solution,their particle size varika from 100nanometer to 1000nanometer
So the relation wil be like
Milk:colloid :curd: colloidal suspension
Curd are complex colloidal suspensions made from animal's milk.The colloidal suspension of milk can be described an oil in water emulsion, with insoluble proteins forming complicated micelles in a water solution their particle size greater than 1000 nanometer.
hope you understand.