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EEE :: Electrolysis and Storage of Batteries

  1. Electrolyte used in an Edison cell is

  2. A.

     NaOH

    B.

     kOH

    C.

     HC1

    D.

     HN03


  3. Life of the batteries is in the following ascending order.

  4. A.

     Lead-acid cell, Edison cell, Nickel cadmium cell

    B.

     Lead-acid cell, Nickel-cadmium cell, Edison cell

    C.

     Edison cell, Nickel-cadmium cell, lead-acid cell

    D.

     Nickel-cadmium cell, Edison cell, lead-acid cell


  5. Mercury cell has which of the following characteristics?

  6. A.

     Flat discharge current-voltage curve

    B.

     High power to weight ratio

    C.

     Comparatively longer shelf life under adverse conditions of high temperature and humidity

    D.

     All of the above


  7. Following will happen if battery charging rate is too high

  8. A.

     excessive gassing will occur

    B.

     temperature rise will occur

    C.

     bulging and buckling of plates will occur

    D.

     all above will occur


  9. Negative plate of an Edison cell is made of

  10. A.

     copper

    B.

     lead

    C.

     iron

    D.

     silver oxide


  11. The body of Edison cell is made of

  12. A.

     bakelite

    B.

     rubber

    C.

     nickel plated steel

    D.

     aluminium


  13. The active materials of a nickel-iron battery are

  14. A.

     nickel hydroxide

    B.

     powdered iron and its oxide

    C.

     21% solution of kOH

    D.

     all of the above


  15. As compared to a lead-acid cell, the efficiency of a nickel-iron cell is less due to its

  16. A.

     compactness

    B.

     lower e.m.f.

    C.

     small quantity of electrolyte used

    D.

     higher internal resistance


  17. Dry cell is modification of

  18. A.

     Deniell cell

    B.

     Leclanche cell

    C.

     Lead-acid cell

    D.

     Edison cell


  19. In alkaline cell the electrolyte is

  20. A.

     dilute sulphuric acid

    B.

     concentrated sulphuric acid

    C.

     NaOH

    D.

     kOH