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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
active
passive
all

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Electrolysis and Storage Batteries
During the charging of a lead-acid cell

its voltage increases
specific gravity of H₂SO₄ decreases
it gives out energy
its cathode becomes dark chocolate brown in colour

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Electrolysis and Storage Batteries
The open circuit voltage of any storage cell depends wholly upon

its temperature
its chemical constituents
all of the listed here
on the strength of its electrolyte

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Electrolysis and Storage Batteries
Local action in a battery is indicated by

both of the listed here
excessive drop in the specific gravity of electrolyte even when the cell is on open circuit
excessive gassing under load conditions
none of the listed here

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Electrolysis and Storage Batteries
In a lead-acid cell, lead is called as

passive material
positive active material
None of the listed here
negative active material

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Electrolysis and Storage Batteries
Lead-acid cell has a life of nearly charges and discharges

700
1000
500
1250

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