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Which of the following statements is/are...

Which of the following statements is/are correct with respect to surface phenomenon ?

A

Potassium ferrocyanide can cause greater coagulation in a basic dye as compared to `Na_(2)HPO_(3)`

B

A starch aqua-sol can act as protective colloid for `Fe(OH)_(3)` sol

C

The slope of the Freundlich isotherm (log `(x)/(m)` us log P) keeps on changing for a long range of pressure and is constant over a limited range of pressure.

D

On mixing `AgNO_(3)` with large amount of KI and subjecting the colloidal state to electrophoresis, coagulation is obtained at cathode.

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A, B, C
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