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Electrolysis and Storage Batteries

Electrolysis and Storage Batteries
Which of the following cell has a reversible chemical reaction ?

Lead-acid
Mercury oxide
Carbon-zinc
Silver-oxide

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Electrolysis and Storage Batteries
A dead storage battery can be revived by

adding distilled water
none of the listed here
a dose of H₂SO₄
adding so-called battery restorer

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Electrolysis and Storage Batteries
Hydrogen evolved during charging produces explosive mixture when it is more than

5 %
8 %
6 %
10 %

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Electrolysis and Storage Batteries
Cells are connected in parallel to

Increase the efficiency
Increase the voltage output
Increase the current capacity
Increase the internal resistance

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Electrolysis and Storage Batteries
If a battery is wrongly connected on charge following will happen

current drawing will be very small
current drawing will be very high
current delivered by the battery will be high
current drawing will be nil

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Electrolysis and Storage Batteries
Self charge of a Ni-Fe cell is _____ Edison cell.

Much more than
More than
Equal to
Less than

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