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Electrolysis and Storage Batteries

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
active
passive
redundant

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Electrolysis and Storage Batteries
The best indication about the state of charge on a lead-acid battery is given by

specific gravity of electrolyte
none of the listed here
temperature of electrolyte
output voltage

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

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

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Electrolysis and Storage Batteries
The effect of sulphation is that the internal resistance

decreases
none of the listed here
increases
remains same

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Electrolysis and Storage Batteries
A constant-voltage generator has

minimum efficiency
high internal resistance
minimum current capacity
low internal resistance

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Electrolysis and Storage Batteries
During discharge, the active material of both the positive and negative plates is changed to

Pb
PbS02
Pb02
PbS04

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