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Question:

Write the name of the cell which is generally used in transistors. Write the reactions taking place at the anode and the cathode of this cell.

Solution:

Generally a primary cell known as Leclanche cell is used in the transistor.
Anode Reaction: Zn→Zn²⁺+2e⁻
Cathode Reaction: MnO₂ + NH₄⁺ + e⁻ → MnO(OH) + NH₃