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400 mL of standard gold sol is just prev...

400 mL of standard gold sol is just prevented from coagulation by the addition of 0.96 g of starch before adding 1 mL of 10% NaCl solution, the gold number will be

A

`2.4`

B

76

C

240

D

24

Text Solution

Verified by Experts

The correct Answer is:
D
400 mL of gold sol requires starch = 960 mg .
`therefore ` 10 mL of glod sol require strach `= (960)/(400) xx 10=24` mg
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