The migration of dispersion medium under the influence of an electric potential is called :
Show Hint
- Cataphoresis
- Electroosmosis
- Electrophoresis
- Sedimentation
The Correct Option is B
Solution and Explanation
Movement of the colloidal (dispersed) particles towards an electrode is electrophoresis (cataphoresis is the same phenomenon).
Movement of the dispersion medium, while the particles are held fixed (e.g. by a membrane or porous plug), is electroosmosis.
Sedimentation is settling of particles under gravity.
Answer: (2) Electroosmosis
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