Question

The gold numbers of some colloidal solutions are given below:

Colloidal solution	Gold number
$A$	$0.01$
$B$	$2.5$
$C$	$20$

The protective powers of these colloidal solutions follow the order:

• A. $C>B>A$
• B. $A>B>C$
• C. $A=B=C$
• D. $B>A>C$

Answer 1

The correct option is B $A>B>C$

Lesser the gold number more is the protective power of the colloidal solution.

Hence, the order is: $A>B>C$