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Gold numbers of protective colloids A,B,...

Gold numbers of protective colloids `A,B,C` and `D` are `0.5,0.1,010` and `0.005` respectivaly. The correct order of their protective power is

A

`DltAltCltB`

B

`CltBltDltA`

C

`AltCltBltD`

D

`BltDltAltC`

Text Solution

Verified by Experts

The correct Answer is:
C
Protective power `prop(1)/("Gold number")`
Thus, protective colloid `D` with the least gold number has the maximum protective power while `A` with the highest gold number has the minimum protective power.
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