Q. The protecting power of lyophilic colloidal sol is expressed in terms of
A) Oxidation number
B) Coagulation value
C) Gold number
D) Critical micelle concentration
Explanation
[Solution from source] The protective power of a lyophilic colloid is expressed by its gold number: the milligrams of it needed to prevent coagulation of 10 mL of gold sol by 1 mL of 10% NaCl. Coagulation value refers to electrolytes coagulating a sol, not to protection. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.