Question

Which of the following statement is correct for electrophoresis?

• A. Colloids are uncharged particles and do not migrate towards the electrodes when electric field is applied
• B. In electrophoresis, the colloidal particles migrate either to the anode or to the cathode depending on the charge of the colloidal particles
• C. Electrophoresis is not a useful method for finding the charge on the colloidal particles
• D. Electrosmosis and electrophoresis are the same

Answer 1

The correct option is B In electrophoresis, the colloidal particles migrate either to the anode or to the cathode depending on the charge of the colloidal particles

(a) Colloids are charged particles and they do migrate towards the electrodes when electric field is applied.
(c) Electrophoresis is a useful method for finding the charge on colloidal particles.
(d) Electrosmosis and electrophoresis are not same.
The movement of colloidal particles under an applied electric potential is called electrophoresis.
Whereas electrosmosis is movement of liquid across the porous material due to the applied electric field.