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On addition of one ml of 10% NaCl soluti...

On addition of one ml of 10% NaCl solution of 10ml gold sol in the presence of 0.25 gm of starch. The coagulation is just prevented, starch had gold number

A

0.025

B

0.25

C

2.5

D

None

Text Solution

Verified by Experts

The correct Answer is:
D
`0.25xx1000=250`.
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