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Electrolysis and Storage Batteries

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

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

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

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

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Electrolysis and Storage Batteries
The active material of the positive plates of silver-zinc batteries is

lead oxide
zinc powder
lead
silver oxide

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Electrolysis and Storage Batteries
Following will occur if level of electrolyte falls below plates

life of the cell is reduced
open plates are converted to lead sulphate
all of these
capacity of the cell is reduced

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Electrolysis and Storage Batteries
During the charging and discharging of a nickel-iron cell

water is neither formed nor absorbed
corrosive fumes are produced
its e.m.f. remains constant
nickel hydroxide remains unsplit

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Electrolysis and Storage Batteries
Excessive formation of lead sulphate on the surface of the plates happens because of

allowing a battery to stand in discharged condition for a long time
all of the listed here
low level of electrolyte
persistent undercharging

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MORE MCQ ON Electrolysis and Storage Batteries

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