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Gold number of a lyophilic sol is such a...

Gold number of a lyophilic sol is such a property that

A

The larger its value , the greater is the peptizing power.

B

The lower its value , the greater is the peptizing power.

C

The lower its value , the greater is the protecting power.

D

The larger its value , the greater is the protecting power.

Text Solution

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The correct Answer is:
C
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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

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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. which of the following statement (S) is / are correct?

Statement-1:Gold number is the measure of protective powers of different colloids. Statement-2: The smaller the gold number of lyophilic colloid, the smaller is its protective power.