Q. The gold numbers of some colloidal solutions are given below [table] Colloidal solution | Gold number ; A | 0.01 ; B | 2.5 ; C | 20 [/table] The protective nature of these colloidal solutions follow the order
A) $C > B > A$
B) $A > B > C$
C) $A = B = C$
D) $B > A > C$
Explanation
(b)
Smaller the value of gold number, greater will be the protecting power of the protective colloid.
Hence, protective nature of $A,\ B\ and\ C$ is as
Colloidal solution : $A > B > C$
Gold number : $\ \ \ \ \ \ \ \ 0.01\ \ 2.5\ \ 20$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.