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Question

Gold number is [MP PET/PMT 1988]


A

The number of mg of lyophilic colloid which should be added to 10 ml of ferric hydroxide sol so as to prevent its coagulation by the addition of 1 ml of 10% sodium chloride solution

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B
The number of mg of lyophilic colloid which should be added to 10 ml of standard gold sol so as to prevent its coagulation by the addition of 1 ml of 10%
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C

The mg of gold salt to be added to a lyophilic colloid to coagulate it

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D

The mg of an electrolyte required to coagulate a colloid

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Solution

The correct option is B The number of mg of lyophilic colloid which should be added to 10 ml of standard gold sol so as to prevent its coagulation by the addition of 1 ml of 10%

B


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