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The gold numbers of protective colloids ...

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

`AgtBgtCgtD`

B

`BgtAgtCgtD`

C

`DgtCgtAgtB`

D

`DgtCgtBgtA`

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The correct Answer is:
2
Smaller is the 'Gold No' of Protective colloid greater is its protective power.
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