Q. Which one of the following does not involve coagulation?
A) Formation of delta regions
B) Peptization
C) Treatment of drinking water by potash alum
D) Clotting of blood by the use of ferric chloride
Explanation
(b)
Coagulation is the phenomenon of conversion of colloidal sol into precipitate while in peptization, a fresh precipitate is converted into sol by adding electrolyte. Hence, it is clear that peptization does not involve coagulation.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.