Q. Which of the following acts as protective colloid?
A) Silica gel
B) Gelatin
C) Sodium acetate
D) None of these
Explanation
(b)
Lyophilic colloids are protective colloids because they prevent the precipitation of lyophobic colloids.
Gelatin is a protective colloid. Its gold number is 0.005-0.001.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.