Question

what is a colloidal solutions? where are they used?

Answer 1

it is a solution in which a material is evenly suspended in a liquid.
they are very useful in medical field ...hey can be used to manipulate blood conditions. 
hope it helped

Answer 2

The solution in which the particles easily scatter a beam of visible light is known as colloidal solution.In this the particles are suspended.This is a type of heterogeneous mixture. Colloidal solutsolutions can be used to manipulate blood and manipulate some food products quality or medicine. Hope this helps you