Q. On adding few drops of dil HCl to freshly precipitated ferric hydroxide, a red coloured solution is obtained. This phenomenon is known as
A) Peptisation
B) Dialysis
C) Protective action
D) Dissolution
Explanation
(a)
When a coagulated substance ($ie,$ colloidal solution) is treated with a suitable electrolyte, it again changes to a colloidal solution, this is known as peptization
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.