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Electrolysis and Storage Batteries

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

500
700
1000
1250

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Electrolysis and Storage Batteries
In constant voltage charging method, the charging current from discharged to fully charged condition

Increases
Decreases
Remains same
None of the listed here

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

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

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Electrolysis and Storage Batteries
The following indicate that battery on charge has attained full charge

gassing
colour of electrode
all of these
specific gravity

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Electrolysis and Storage Batteries
Mercury cell has which of the following characteristics?

Comparatively longer shelf life under adverse conditions of high temperature and humidity
All of these
Flat discharge current-voltage curve
High power to weight ratio

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Electrolysis and Storage Batteries
On overcharging a battery

It will increase the capacity of the battery
It will bring about chemical change in active materials
It will raise the specific gravity of the electrolyte
None of these

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