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Gold number was given by :...

Gold number was given by :

A

ostwald

B

zsigmondy

C

william and chang

D

langmuir

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The correct Answer is:
B
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Gold number gives

the protective power of the lyophilic colloids es expressed in terms of gold number, a term introduced by Zsigmondy. Gold number is the number of milli - gram of the protective colloid which prevent the coagulation of 10 mLof red gold sol , when 1 mL of a 10 per cent solution of sodium chloride is added to it . thus smaller the gold number of lyophillic colloid, the greater is the protective power. gold number given an indication of

Gold number is minimum in case of……………

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