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प्रश्न
Define the following terms: Secondary batteries
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?
From the given cells:
Lead storage cell, Mercury cell, Fuel cell and Dry cell
Answer the following:
(i) Which cell is used in hearing aids?
(ii) Which cell was used in Apollo Space Programme?
(iii) Which cell is used in automobiles and inverters?
(iv) Which cell does not have long life?
What type of battery is mercury cell? Why is it more advantageous than dry cell?
Name the type of cell which was used in Apollo space programme for providing electrical power.
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 ΔrGΘ and EΘ 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.
