On addition of one ml solution 10% NaCl to 10 ml gold sol in the prese – InterviewSolution

1.	On addition of one ml solution 10% NaCl to 10 ml gold sol in the presence of 0.0250g of starch , the coagulation is just prevented starch has the gold number :
Answer» `2.5` 25 `0.25` 250 Solution :Gold no. `=` amount of protective colloid in MG to be added to `10ml` of gold sol to PREVENT its COAGULATION on add of `1 ml` of `10% NaCl` solution of Gold no. `=0.0250xx1000=25`

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