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 a protective colloid for `Fe(OH)_(3)` sol.C. The slope of the Freundlich Isotherm (log `(x)/(m)` vs 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.

Which of the following statements is/are correct with respect to surfa

1.	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 a protective colloid for `Fe(OH)_(3)` sol.C. The slope of the Freundlich Isotherm (log `(x)/(m)` vs 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.
Answer» Correct Answer - A::B::C (A) `K_(4)[Fe(CN)_(6)]rarr4K^(+)[Fe(CN0_(6)]^(-4)` `Na_(2)HPO_(3)rarr2Na^(+)+HPO_(3)^(2-)` higher negative charge over`[Fe(CN)_(6)]^(4-)` so it can cause more coagulation in a basic dye. (B) Starch aqua-sol is a lyophilic sol so it can be used as protective colloid. (C) Freundlich adsorption isotherm fails at high pressure

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