The dispersed phase in colloidal iron (III) hydroxide and collodial gold is positively and negtively charged respectively with of the following statement is not correct ?

Options

A. Coagulation in both sols can be throught about by electrophoresis
B. Mixing the sols has no effect
C. Sodium sulphate solution causes coangulation in both sols
D. Magnesium chloride solution coagulates, the gold sol more readily than the ion (III) hydroxide sol.

Answer

B

Explanation

On mixing, they will coagulate each other being +ve and -ve charged.