A) Coagulation
B) Electrophoresis
C) Electroosmosis
D) Tyndall effect
Correct Answer: D
Solution :
[d] Coagulation is generally brought about by the addition of electrolytes. When an electrolyte is added to a colloidal solution, the particles of the sol take up the ions which are oppositely charged. As a result their charge gets neutralised. |
Electrophoresis The movement of colloidal particles under an applied electric potential is called electrophoresis. Electroosmosis may be defined as a phenomenon in which the molecules of the dispersion medium are allowed to more under the influence of an electric field whereas colloidal particles are not allowed to more. |
Tyndall effect is the scattering of light by sol particles, which cannot be affected by charge on them. |
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