Exactly 8mg of a lyophilic 'sol' is added to 20ml of a gold sol to pro – InterviewSolution

1.	Exactly 8mg of a lyophilic 'sol' is added to 20ml of a gold sol to protect against addition of 2ml of 20% NaCl. What is the gold number of the given sol?
Answer» Solution :20 ml of gold SOL `RARR` 8 mg 10 ml of gold sol `rarr ?` 2ML `rarr ? 20% NaCl to 4 mg` `1 ml rarr 10% NaCl rarr ?`

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