• # question_answer     The gold number of some colloidal solutions are given below Colloidal solution Gold number A 0.01 B 2.5 C 20 The protective nature of these colloidal solutions follows the order A)  $C>B>A$          B)  $~A>B>C$ C)  $A=B=C$          D)  $B>A>C$

Protective power $\propto \frac{1}{gold\text{ }number}$ Hence, the correct order of protective nature of these colloidal solution is $A>B>C$