Gold number is associated with

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(B) $Gold$ number is a measure of the protective power of a lyophilic colloid. It is defined as the minimum mass of a protective colloid in $mg$ that

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Only lyophilic colloids

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(B) $Gold$ number is a measure of the protective power of a lyophilic colloid. It is defined as the minimum mass of a protective colloid in $mg$ that must be added to $10 \ mL$ of a standard red gold sol so that no coagulation occurs when $1 \ mL$ of $10\% \ NaCl$ solution is added to it. Thus,it is associated with only lyophilic colloids.

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