ChemistryThe gold numbers of protective colloids A, B, C and D are 0.04, 0.004, 10 and 40 respectively. The protective powers of A, B, C and D are in the order :

The gold numbers of protective colloids A, B, C and D are 0.04, 0.004, 10 and 40 respectively. The protective powers of A, B, C and D are in the order :

A
$A > B > C > D$
B
$B > A > C > D$
C
$D > C > A > B$
D
$D > C > B > A$

Solution:

Protective power $\propto \frac{1}{gold number}$

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