JEE Main 2023 — Surface Chemistry Question with Solution
JEE Main 2023 (29 Jan Shift 2)
Question
Match List-I and List-II
| List-I | List-II | ||
| A. | Osmosis | I. | Solvent molecules pass through semi permeable membrane towards solvent side. |
| B. | Reverse osmosis | II. | Movement of charged colloidal particles under the influence of applied electric potential towards oppositely charged electrodes |
| C. | Electro osmosis | III. | Solvent molecules pass through semi permeable membrane towards solution side |
| D. | Electrophoresis | IV. | Dispersion medium moves in an electric field. |
Choose the correct answer from the options given below:
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Show full solutionCorrect option: B
Step-by-step explanation
(A) Osmosis: It is a process by which the molecules of a solvent pass from a solution of low concentration to a solution of high concentration through a semi-permeable membrane.
(B) Reverse osmosis: The direction of osmosis can be reversed if a pressure larger than the osmotic pressure is applied to the solution side. Now the pure solvent flows out of the solution through the semi-permeable membrane. This phenomenon is called reverse osmosis.
(C) Electroosmosis: When electrophoresis, i.e., movement of particles is prevented by some suitable means, it is observed that the dispersion medium begins to move in an electric field. This phenomenon is termed electroosmosis.
(D) Electrophoresis: 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.
So the correct matching is A-III, B-I, C-IV, D-II.
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This is a previous-year question from JEE Main 2023, covering the Surface Chemistry chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.