The coagulation of 10 ml of gold sol is just prevented on adding 1 ml – InterviewSolution

1.	The coagulation of 10 ml of gold sol is just prevented on adding 1 ml solution of 10% NaCl in the presence of 0.025 g of starch. The gold number of starch is:
Answer» `0.25` `0.025 ` `2.5 ` `250.` Solution :MILLIGRAMS of STARCH used `0.025 xx 1000= 25` MG`

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