Gold numbers of some colloids are : 0.005-0.01, Grum arabic : 0.15-0.2 – InterviewSolution

1.	Gold numbers of some colloids are : 0.005-0.01, Grum arabic : 0.15-0.25,Oleate : 0.04-1.0, Starch:15-25. Which among these is a better protective colloid?
Answer» Gelatin Starch Oleate Gum arabic Solution :Gold number`PROP(1)/("Protective POWER")` i.e., The smaller the value of gold number of lyobhilic sol, the GREATER is the protective action. Hence, gelatin will be better protective colloid.

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