The coagulation of `100mL` of a colloidal solution of gold is completely prevented by adding `0.25g` of starch to it before adding `10mL` of `10%NaCl` solution. The gold number of starch is
A
`24`
B
`240`
C
`120`
D
`360`
Text Solution
Verified by Experts
The correct Answer is:
A
`0.024g` or `24mg`
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