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Select the incorrect statements :-...

Select the incorrect statements :-

A

For coagulation of `As_(2)S_(3)` sol, +ve ions are effective.

B

For coagulation of aluminium hydroxide sol `Ba^(2+)` ions are more effective than `Na^(+)`

C

Cellulose solution is an example of multimolecular colloid system

D

Colloidal sol of metals such as gold, silver etc are prepared by Bredig's arc method.

Text Solution

Verified by Experts

The correct Answer is:
B, C
(B) Aluminium hydroxide is a +ve sol, so -ve ions are effective in coagulation.
(C) Cellulose solution is an example of macromolecular colloid.
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