Question

The gold numbers of protective colloids A, B, C, and D are $0.04,0.002,10$ and $25$ respectively. The protective powers of A, B, C and D are in the order of :

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

Answer 1

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

Smaller the gold number of protective colloid, greater is the protective power. So, the protective powers of A, B, C, and D are in the order of $B>A>C>D$.