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

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Electrolysis and Storage Batteries
The common impurity in the electrolyte of lead-acid battery is

iron
dust particles
lead crystals
chlorine

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Electrolysis and Storage Batteries
As compared to a lead-acid cell, the efficiency of a nickel-iron cell is less due to its

higher internal resistance
compactness
small quantity of electrolyte used
lower e.m.f.

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Electrolysis and Storage Batteries
Capacity of dry cells is

unaffected by the type of discharge
more when it is supplying current for continuous periods
more when it is supplying current for intermittent periods
None of these

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

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

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Electrolysis and Storage Batteries
The body of Edison cell is made of

aluminium
nickel plated steel
rubber
bakelite

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