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Some statements about Lechlanche cell are (I) Anode is zinc metal (II) Cathode is graphite rod surrounded by powdered MnO ₂ and carbon (III)Electrolyte is a moist paste of ZnO and KOH (IV)Oxidation product is ZnO The correct statements are

Options

  1. AI & II only
  2. BII & III only
  3. CI & IV only
  4. DI, II & III only

Correct answer

A. I & II only

Step-by-step solution

Lechlunche cell:- Anode : Zn Container Zn ( s ) Zn ²⁺ (aq.) +2 e ⁻ Cathode: Carbon (graphite) + MnO ₂+ Carbon powder. MnO ₂+ NH ₄⁺+ e ⁻ MnO ( OH )+ NH ₃ Electrolyte = NH ₄ Cl + ZnCl ₂ paste Thus, I and II are correct.

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