Q125 / 200 · MHT CET - Medical 2026 (25 April Shift 1) · Chemistry
Which of the following acts as a cathode in a dry cell?
- A$\text{Zn} + \text{NH}_4\text{Cl}$
- B$\text{Zn}$
- Correct answerCGraphite rod
- D$\text{NH}_4\text{Cl} + \text{ZnCl}_2$
Solution
In a dry cell (Leclanché cell), the anode is a zinc container.
The cathode is a graphite (carbon) rod surrounded by powdered manganese dioxide ($\text{MnO}_2$) and carbon.
The space between the electrodes is filled with a moist paste of ammonium chloride ($\text{NH}_4\text{Cl}$) and zinc chloride ($\text{ZnCl}_2$).
Therefore, the graphite rod acts as the cathode.
Answer: Graphite rod
The cathode is a graphite (carbon) rod surrounded by powdered manganese dioxide ($\text{MnO}_2$) and carbon.
The space between the electrodes is filled with a moist paste of ammonium chloride ($\text{NH}_4\text{Cl}$) and zinc chloride ($\text{ZnCl}_2$).
Therefore, the graphite rod acts as the cathode.
Answer: Graphite rod
Hence, the correct answer is option: 'C'.