Which of the following acts as depolariser in Lechlanche cell?

Option 1 : MnO2

Leclanche Cell:

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• A Leclanche cell consists of a glass vessel that is filled with ammonium chloride solution. 
• Ammonium chloride solution acts as an electrolyte. 
• In the electrolyte, there stands a zinc rod and porous pot containing a carbon rod, which is packed around with a mixture of manganese dioxide and powdered carbon.
• The carbon and zinc rods act as positive and negative electrodes respectively.
   

Explanation:

• A battery depolarizer takes up electrons during the discharge of the cell and thus it is always an oxidizing agent.
• The term depolarizer has been used to denote a substance used in the primary cell to prevent the build-up of hydrogen gas bubbles.
• Manganese dioxide is used as a depolarizer in Leclanche cells and dry cells.