JEE MAIN - Chemistry (2024 - 9th April Evening Shift - No. 9)
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 $$\mathrm{Zn} \rightarrow \mathrm{Zn}^{2+}+2 \mathrm{e}^{-}$$ |
Choose the correct answer from the options given below :
A-III, B-I, C-IV, D-II
A-I, B-II, C-III, D-IV
A-IV, B-III, C-I, D-II
A-II, B-III, C-IV, D-I
Explanation
To find the correct match between List I (Cell) and List II (Use/Property/Reaction), let's first understand each item and its corresponding match:
List I (Cell):
- Leclanché cell: This is a primary cell (non-rechargeable) widely used in flashlights and other portable devices. It's not designed for recharging.
- Ni - Cd cell: Nickel-Cadmium (NiCd) batteries are rechargeable and known for being used in portable electronics, tools, and various battery-operated devices.
- Fuel cell: Converts chemical energy, from a fuel into electricity through a chemical reaction with oxygen or another oxidizing agent. It converts energy of combustion (such as hydrogen) into electrical energy directly.
- Mercury cell: A type of battery that uses mercury oxide. It's known for its stable output voltage, making it suitable for devices like hearing aids. However, the reaction described in the list II does not pertain to the mercury cell but more closely to the Leclanché cell or similar.
List II (Use/Property/Reaction):
- Converts energy of combustion into electrical energy: This directly relates to the principle behind fuel cells, which generate electricity through the chemical reaction of a fuel with oxygen.
- Does not involve any ion in solution and is used in hearing aids: This refers to the mercury cell, which is chosen for devices requiring a stable voltage, like hearing aids, although the description about ions might be misleading. The characteristic here is about stable voltage and application in hearing aids.
- Rechargeable: This trait is indicative of Ni - Cd cells, which are known for their ability to be recharged multiple times.
- Reaction at anode $$\mathrm{Zn} \rightarrow \mathrm{Zn}^{2+}+2 \mathrm{e}^{-}$$: This anodic reaction is typical in cells like the Leclanché cell, which features a zinc anode undergoing oxidation.
Given these explanations, the correct matches would be:
- A (Leclanché cell) with IV, due to the anodic reaction involving zinc.
- B (Ni - Cd cell) with III, because it is rechargeable.
- C (Fuel cell) with I, as it converts the energy of combustion into electrical energy.
- D (Mercury cell) with II, by elimination and considering its use in devices like hearing aids and the slight misdescription regarding ions.
Therefore, the correct answer is Option C: A-IV, B-III, C-I, D-II.
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