Chemistry, asked by aashishdimri8116, 5 months ago

Gold number is the index for : (a) troplated gold
(b) metallic gold (c) protective colloid (d) purity of gold

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Answered by 7702029397
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Answer:

Gold number of a protective colloid is a minimum weight of it in milligrams which must be added to 10ml of a standard red gold sol so that no coagulation of the gold sol occurs, therefore it a measure of efficiency of protective colloid

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