Gold Number is defined as the mass of protective colloidal solution which will just prevent the coagulation of x mL of a given gold solution on adding y mL of z% NaCl solution. x, y and z are respectively
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a
1
b
2
c
3
d
4
answer is B.
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Detailed Solution
By difinition of gold number X = 10 mL of gold sol y = 1mL z = 10% NaCl solution
Gold Number is defined as the mass of protective colloidal solution which will just prevent the coagulation of x mL of a given gold solution on adding y mL of z% NaCl solution. x, y and z are respectively