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Electrolysis and Storage Batteries

Electrolysis and Storage Batteries
When the lead-acid cell is fully charged, the electrolyte assumes _____ appearance

bright
reddish
milky
dull

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

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

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Electrolysis and Storage Batteries
Cell short circuit results in

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

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

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

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Electrolysis and Storage Batteries
Following will happen if the specific gravity of electrolyte becomes more than 1.23.

All of the listed here
Corrosion of the grids of the plate
Loss of life
Loss of capacity

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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
passive
active
redundant

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