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Electrolysis and Storage Batteries

Electrolysis and Storage Batteries
The lead-acid cell should never be discharged beyond

2.1 V
2 V
1.9 V
1.8 V

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Electrolysis and Storage Batteries
The active materials of a nickel-iron battery are

21% solution of kOH
nickel hydroxide
powdered iron and its oxide
all of these

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Electrolysis and Storage Batteries
_______ of electrolyte indicates the state of charge of the battery

viscosity
mass
colour
specific gravity

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Electrolysis and Storage Batteries
As compared to constant-current system, the constant-voltage system of charging a lead acid cell has the advantage of

Both of the listed here
reducing time of charging
increasing cell capacity
avoiding excessive gassing

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Electrolysis and Storage Batteries
In a battery cover is placed over the element and sealed to the top of the battery container. This is done

None of the listed here
to exclude dirt and foreign matter from the electrolyte
to reduce evaporation of water from electrolyte
Both of the listed here

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Electrolysis and Storage Batteries
Cells are connected in series in order to

increase the current rating
increase the life of the cells
None of the listed here
increase the voltage rating

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