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Electrolysis and Storage Batteries

Electrolysis and Storage Batteries
Negative plate of an Edison cell is made of

copper
lead
iron
silver oxide

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Electrolysis and Storage Batteries
In a lead-acid cell dilute sulfuric acid (electrolyte) approximately comprises the following

three parts H2O, one part H₂SO₄
two parts H2O, two parts H₂SO₄
one part H2O, three parts H₂SO₄
all H₂SO₄

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

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

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Electrolysis and Storage Batteries
The watt-hour efficiency of a lead-acid cell varies between

90 to 95%
40 to 60%
25 to 35%
70 to 80%

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Electrolysis and Storage Batteries
The storage battery generally used in electric power station is

none of the listed here
lead-acid battery
nickel-cadmium battery
zinc-carbon battery

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Electrolysis and Storage Batteries
Internal resistance of a cell is due to

electrode resistance
resistance of electrolyte
surface contact resistance between electrode and electrolyte
all of the listed here

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