Match the LIST-I with LIST-II.
| LIST-I (Type of cells/process) | LIST-II (Explanation) | ||
| A. | Electrolytic cell | I. | Potential difference develops between the electrode and the electrolyte |
| B. | Galvanic cell | II. | Device in which chemical energy of the spontaneous redox reaction is converted into electrical energy. |
| C. | Electrolysis | III. | Device in which electrical energy is used to carry non-spontaneous chemical reaction. |
| D. | Electrode potential | IV. | Dissociation of salt by passing current |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → A-III, B-II, C-IV, D-I
An electrochemical cell converts chemical energy into electrical energy, while an electrolytic cell uses electrical energy to drive a chemical change.
A. Electrolytic cell — This matches III. Device in which electrical energy is used to carry non-spontaneous chemical reaction. Electroplating and the extraction of reactive metals are examples.
B. Galvanic cell — This matches II. Device in which chemical energy of the spontaneous redox reaction is converted into electrical energy. The Daniell cell is an example.
C. Electrolysis — This matches IV. Dissociation of salt by passing current. Passing current through a molten or dissolved salt decomposes it at the electrodes.
D. Electrode potential — This matches I. Potential difference develops between the electrode and the electrolyte. When a metal is dipped in a solution of its ions, a potential difference develops at the interface.
Shortcut: The pair A–III appears in Options (2), (3) and (4), and B–II then leaves only Option (2).