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Electrolysis and Storage Batteries

Electrolysis and Storage Batteries
The ratio of ampere-hour efficiency to watt-hour efficiency of a lead-acid cell is

always greater than one
none of the listed here
just one
always less than one

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Electrolysis and Storage Batteries
Those substances of the cell which take active part in chemical combination and hence produce electricity during charging or discharging are known as______materials.

all
redundant
passive
active

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Electrolysis and Storage Batteries
The open circuit voltage of any storage cell depends wholly upon

all of the listed here
on the strength of its electrolyte
its chemical constituents
its temperature

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Electrolysis and Storage Batteries
On overcharging a battery

None of these
It will bring about chemical change in active materials
It will increase the capacity of the battery
It will raise the specific gravity of the electrolyte

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

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

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Electrolysis and Storage Batteries
The active materials on the positive and negative plates of a fully charged lead-acid battery are

lead and lead peroxide
lead sulphate and lead
lead peroxide and lead
None of these

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