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

Gold numbers of protective colloids A,B,C and D are `0.05,0.01,1.10 and 0.005` respectively. The correct order of their protective powers is

A

`D lt A lt C lt B`

B

`C lt B lt D lt A`

C

`A lt B lt C lt D`

D

`B lt D lt A lt C`

Text Solution

Verified by Experts

The correct Answer is:
C
For a protective colloid, lesser the value of gold number, better is the protective power gold number : `0.50 gt 0.10 gt 1.01 gt 0.005`
Protective power : `A lt C lt B lt D.`
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