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Electrolysis and Storage Batteries

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

2.1 V
2 V
1.8 V
1.9 V

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Electrolysis and Storage Batteries
Internal short circuits are caused by

none of the listed here
breakdown of one or more separators
excess accumulation of sediment at the bottom of the cell
both of the options given here

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Electrolysis and Storage Batteries
Excessive charging a battery tends to

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

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Electrolysis and Storage Batteries
The capacity of a battery is expressed in terms of

voltage rating
current rating
ampere-hour rating
none of the listed here

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Electrolysis and Storage Batteries
Which of the following is incorrect?

A lead-acid cell can be recharged
A carbon-zinc cell has unlimited shelf life
A storage cell has a reversible chemical reaction
A primary cell has an irreversible chemical reaction

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Electrolysis and Storage Batteries
The substances which combine together to store electrical energy during the charge are called ______ materials

passive
active
insert
dielectric

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