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Question

The protecting power of lyophilic colloidal sol is expressed in terms of

A
Coagulation value
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B
Gold number
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C
Critical micelle concentration
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D
Oxidation number
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Solution

The correct option is B Gold number
The protecting power of lyophilic colloidal sol is expressed in terms of gold number. The Gold Number is the minimum weight (in milligrams) of a protective colloid required to prevent the coagulation of 10 mL of a standard hydro gold sol when 1 mL of a 10% sodium chloride solution is added to it.

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