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प्रश्न
Define the following terms: Secondary batteries
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उत्तर
Secondary batteries can be recharged by passing current through them in the opposite direction. Examples of secondary batteries include a lead storage battery and a nickel–cadmium cell.
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संबंधित प्रश्न
Draw neat and labelled diagram of dry cell.
Write cell reaction in lead storage battery during discharge.
Define electrochemical cell
Why does the cell potential of mercury cell remain constant throughout its life?
What type of battery is mercury cell? Why is it more advantageous than dry cell?
Define terms: Fuel cell
In the button cells widely used in watches and other devices, the following reaction takes place:
\[\ce{Zn_{(s)} + Ag2O_{(s)} + H2O_{(l)} -> Zn{^{2+}_{(aq)}} + 2Ag_{(s)} + 2OH^-_{ (aq)}}\]
Determine ΔrG° and E° for the reaction.
Without losing its concentration; ZnCl2 solution cannot be kept in contact with
Give reasons:
Mercury cell delivers a constant potential during its life time.
Dry cells are commonly used in clocks, torches, calculators etc. They are the most familiar type of commercial cells.
- What acts as anode and cathode in dry cell?
- Which chemical compounds are filled between anode and cathode of this cell?
- Why do dry cells not have a long life?
