Question

Colloids are classified into multi-molecular, macro-molecular and associated colloids.

(a) True

(b) False

This question was addressed to me in an international level competition.

My question is based upon Surface Chemistry topic in portion Surface Chemistry of Chemistry – Class 12

Answer 1

The correct choice is (a) True

For explanation I would say: Based on the nature of dispersed phase, colloids are classified into multi-molecular, macro-molecular and associated colloids. In multi-molecular colloids a large number of atoms aggregate to form a particle of colloidal size, in macro-molecular colloids molecules dissolve in suitable solvents and give rise to particles of colloidal size. Colloids which behave as a normal strong electrolyte at low concentration but exhibits colloidal properties at higher concentration are known as associated colloids.