Structure and working of a dry cell


 
 
Concept Explanation
 

Structure and Working of a Dry Cell

In a cell, a chemical reaction takes place, due to which chemical energy changes into electrical energy. Thus, the cell becomes a source of electricity. The most commonly used cell is a dry cell. This cell cannot be recharged. It is also called a primary cell.

Structure of Dry Cell

  • The dry cell consists of an outer covering made of Zinc.
  • Inside the Zinc Container a paste of ammonium chloride is present indicated with grey colour in the figure below.
  • Inside the paste, a cardboard container containing powdered manganese dioxide is placed indicated with purple colour in the figure below.
  •  The cardboard container has microscopic ‘holes’ in it (such materials are called porous materials) through which a chemical reaction takes place between ammonium chloride paste and powered manganese dioxide.
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    Sample Questions
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    Question : 1

    Name the type of cell which uses carbon and zinc as electrodes

    Right Option : B
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    Question : 2

    The dry cell consists of an outer covering made of Zinc which consists of a paste of _________________.

    Right Option : A
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    Explanation
    Question : 3

    The dry cell consists of an outer covering made of ________________.

    Right Option : C
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    Explanation
     
     
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