JEE Main · 2024 · Shift-IIeasyEC-025

Match List I with List II | | List-I (Cell) | | List-II (Use/Property/Reaction) | |---|---|---|---| | A. | Leclanche…

Electrochemistry · Class 12 · JEE Main Previous Year Question

Question

Match List I with List II

| | List-I (Cell) | | List-II (Use/Property/Reaction) | |---|---|---|---| | A. | Leclanche cell | I. | Converts energy of combustion into electrical energy | | B. | Ni-Cd cell | II. | Does not involve any ion in solution and is used in hearing aids | | C. | Fuel cell | III. | Rechargeable | | D. | Mercury cell | IV. | Reaction at anode: ZnZn2++2e\mathrm{Zn \rightarrow Zn^{2+} + 2e^-} |

Choose the correct answer from the options given below:

Options
  1. a

    A-II, B-III, C-IV, D-I

  2. b

    A-I, B-II, C-III, D-IV

  3. c

    A-III, B-I, C-IV, D-II

  4. d

    A-IV, B-III, C-I, D-II

Correct Answerd

A-IV, B-III, C-I, D-II

Detailed Solution

Strategy: Match each primary/secondary/fuel cell type with its defining chemical characteristic or application area as studied in basic electrochemistry.

Analysis:

  • (A) Leclanché cell: The standard dry cell where Zinc acts as the anode: \ceZnZn2++2e\ce{Zn \rightarrow Zn^{2+} + 2e^-}. (Match IV)
  • (B) Ni-Cd cell: A secondary battery known for being rechargeable. (Match III)
  • (C) Fuel cell: Specifically designed to convert the chemical energy of combustion (e.g., \ceH2+O2\ce{H2 + O2}) directly into electricity. (Match I)
  • (D) Mercury cell: Uses a Zinc-Mercury amalgam and \ceHgO\ce{HgO}; it maintains a constant voltage and is common in hearing aids. (Match II)

Answer: (d) A-IV, B-III, C-I, D-II\boxed{\text{Answer: (d) A-IV, B-III, C-I, D-II}}

Practice this question with progress tracking

Want timed practice with adaptive difficulty? Solve this question (and hundreds more from Electrochemistry) inside The Crucible, our adaptive practice platform.

Match List I with List II | | List-I (Cell) | | List-II (Use/Property/Reaction) | |---|---|---|---|… (JEE Main 2024) | Canvas Classes