Question
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) $D>C>B>A$
Step 1
This means that the lower the gold number, the higher the protective power. Show more…
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Gold numbers of protective colloids $\mathrm{A}, \mathrm{B}, \mathrm{C}$ and $\mathrm{D}$ are $0.50,0.01,0.10$ and $0.005$, respectively. The correct order of their protective powers is a. $\mathrm{D}<\mathrm{A}<\mathrm{C}<\mathrm{B}$ b. $C<B<D<A$ c. $\mathrm{A}<\mathrm{C}<\mathrm{B}<\mathrm{D}$ d. $\mathrm{B}<\mathrm{D}<\mathrm{A}<\mathrm{C}$
The gold numbers of $\mathrm{A}, \mathrm{B}, \mathrm{C}$ and $\mathrm{D}$ are $0.04,0.002,10$ and 25, respectively. The protective powers of $\mathrm{A}, \mathrm{B}, \mathrm{C}$ and $\mathrm{D}$, respectively, are in the order (a) $\mathrm{A}>\mathrm{B}>\mathrm{C}>\mathrm{D}$ (b) $\mathrm{B}>\mathrm{A}>\mathrm{C}>\mathrm{D}$ (c) $\mathrm{D}>\mathrm{C}>\mathrm{B}>\mathrm{A}$ (d) $\mathrm{C}>\mathrm{A}>\mathrm{B}>\mathrm{D}$
Surface Chemistry
Exercises I
Gold numbers of protective colloids $\mathrm{A}, \mathrm{B}, \mathrm{C}$ and $\mathrm{D}$ are $0.50,0.01,0.10$ and $0.005$, respectively. The correct \mathrm{\{} o r d e r ~ o f ~ t h e i r ~ p r o t e c t i v e ~ p o w e r s ~ i s ~ (a) $\mathrm{D}<\mathrm{A}<\mathrm{C}<\mathrm{B}$ (b) $C<B<D<A$ (c) $\mathrm{A}<\mathrm{C}<\mathrm{B}<\mathrm{D}$ (d) $\mathrm{B}<\mathrm{D}<\mathrm{A}<\mathrm{C}$
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