Colloidal particles in a sol can be coagulated by — Surface Chemistry Chemistry Question

💡 Solution & Explanation

Coagulation of a sol can be induced by heating (which increases collisions and reduces adsorbed charge), by adding an electrolyte (ions of opposite charge neutralize the sol), or by mixing it with an oppositely charged sol (mutual coagulation). Adding dispersion medium simply dilutes the sol. Therefore, correct answer is A,B,C.