Coagulation refers to the process of settling down of colloidal particles leading to precipitation of lyophobic sol.
Coagulation is also known as precipitation.
The lyophobic sols are stable due to presence of charge on colloidal particles.
If the charges are removed, the colloidal particles will form aggregates and settle down under gravitational force.
The lyophobic sols are coagulated by electrophoresis, electrolyte addition, boiling, and persistent dialysis.
Final Answer:
Coagulation is the process involving precipitation of the colloidal particles.