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Electrolysis and Storage Batteries

Electrolysis and Storage Batteries
Which of the following primary cells has the highest voltage ?

Manganese-alkaline
Mercury
Carbon-zinc
Lithium

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Electrolysis and Storage Batteries
Excessive charging a battery tends to

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

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

dielectric
insert
active
passive

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Electrolysis and Storage Batteries
In order that a hydrometer may float vertically in electrolyte its C.G. should be

undisturbed
displaced sideways
raised
lowered

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Electrolysis and Storage Batteries
On the average the ampere-hour efficiency of an Edison cell is about

0.7
0.4
0.8
0.6

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Electrolysis and Storage Batteries
Internal resistance of a cell is due to

electrode resistance
resistance of electrolyte
all of the listed here
surface contact resistance between electrode and electrolyte

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