AIEEE 2005 Chemistry Solved Paper

Section: Chemistry

Question : 28 of 74

Marks: +1, -0

The disperse phase in colloidal iron (III) hydroxide and colloidal gold is positively and negatively charged, respectively, which of the following statements is NOT correct?

[AIEEE 2005]

magnesium chloride solution coagulates, the gold sol more readily than the iron (III) hydroxide sol.
sodium sulphate solution causes coagulation in both sols
mixing the sols has no effect
coagulation in both sols can be brought about by electrophoresis

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