Question

Match the column:

Column-l	Column-Il
(i) Dispersion medium moves in and electric filed.	(a) Osmosis
(ii) Solvent molecules pass through steric permeable membrane towards solvent side.	(b) Electrophoresis
(iii) Movement of charged colloidal particle under the influence of applied electric potential towards oppositely charged electrodes.	(c) Electro osmosis
(iv) Solvent molecules pass through steric permeable membrane towards solution side.	(d) Reverse osmosis

(1) (i)-c, (ii) - d, (iii) - b, (iv) - a
(3) (i)-a, (ii) b, (iii) - c, (iv) - d
(2) (i)-b, (ii) a, (iii) - c, (iv) - d
(4) (i)-d, (ii)-c, (iii)-a, (iv)-b

Answer 1

(1) (i)-c, (ii) - d, (iii) - b, (iv) - a

(i) Electro osmosis: When movement of colloidal particles is prevented by some suitable means (porous diaphragm or semi permeable membranes), it is observed that the D.M. begins to move in an electric field. This phenomenon is termed electrosmosis.

(ii) Solvent molecules pass through semi-permeable membrane towards solvent side is termed as reverse osmosis.

(iii) When an electric potential is applied across two platinum electrodes dipping in a colloidal solution, the colloidal particles move towards one or the other electrode. The movement of colloidal particles under an applied electric potential is called electrophoresis.

(iv) Solvent molecules pass through semipermeable membrane towards the solution side is termed as osmosis.