AIPMT PRELIMS2012Chemistry-Surface Chemistry
AIPMT PRELIMS 2012 Chemistry Colloids MCQ Question
Type: MCQ-fact-Easy
The protecting power of lyophilic colloidal sol is expressed in terms of
A
Oxidation number
B
Coagulation value
C
Gold number
D
Critical micelle concentration
Correct Answer
Option C
Detailed Explanation
The gold number is a measure of the protective power of a lyophilic colloid. It is the minimum amount of lyophilic colloid required to prevent the coagulation of a given amount of gold sol.
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