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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.

redundant
all
active
passive

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Electrolysis and Storage Batteries
The e.m.f. of an Edison cell, when fully charged, is nearly

1.4 V
1.8 V
2.0 V
2.5 V

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Electrolysis and Storage Batteries
Batteries are charged by

engine generator sets
rectifiers
motor generator sets
any one of the listed here

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Electrolysis and Storage Batteries
Which of the following has lower sp. gravity V

Water
Dilute H₂SO₄
All of the listed here
Concentrated H₂SO₄

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

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

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Electrolysis and Storage Batteries
Cell short circuit results in

low sp. gravity electrolyte
reduced gassing on charge
abnormal high temperature
all of the listed here

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