JEE Main Chemistry question
Not in JEE Main or NEET syllabus
Gold numbers of a few colloids are given below:
Gelatin = 0.005, Starch = 25, Egg albumin = 0.08, Gum Arabic = 0.10
Which is the best protective colloid?
Answer: (A)
Solution
A lower gold number indicates that a smaller mass of the protective colloid is needed to prevent the coagulation of a standard gold sol, so the colloid with the lowest
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