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Electrolysis and Storage Batteries

Electrolysis and Storage Batteries
The lead-acid cell should never be discharged beyond

1.9 V
2.1 V
1.8 V
2 V

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Electrolysis and Storage Batteries
Ampere hour capacity of an industrial battery is based on ____ hours discharge rate.

24
10
12
8

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

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

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Electrolysis and Storage Batteries
Excessive charging a battery tends to

increase the internal resistance of the battery
bring about all above changes
produce gassing
to corrode the positive plates into lead peroxide thereby weakening them physically

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

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

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Electrolysis and Storage Batteries
Persons preparing electrolyte should wear

rubber boots and gloves
all of these
goggles or other face shield
rubber

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