true solution, suspension and colloidal solution
Based on distinct properties, solutions can be classified into True Solution, Suspension and Colloid-
True Solution -Its a homogeneous of 2 or more substances.Particles of true solution cannot be filtered through filter paper and are not visible to naked eye.
Suspension -It is a heterogeneous mixture in which particle size of one or more components is greater than 1000 nm.Contrary to True Solution,particles of suspension are big enough to be seen with naked eye.
Colloidal Solution -Its a heterogeneous mixture (like suspension) n which particle size of substance is intermediate of true solution and suspension that is between 1-1000 nm. These are big enough to be blocked by parchment paper or animal membrane.