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The coagulation of 10cm^(3) of gold sol ...

The coagulation of `10cm^(3)` of gold sol by `1 ml 10% NaCl` solution is completely prevented by addition of `0.025g` of starch to it. The gold number of starch is

A

`0.25`

B

`0.025`

C

25

D

250

Text Solution

Verified by Experts

The correct Answer is:
C
Gold number of starch = `0.025 xx1000`
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