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Electrolysis and Storage Batteries

Electrolysis and Storage Batteries
Weston standard cell at 20°C has voltage of ____ volts.

1.0187
1.5
0.8
1.2

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Electrolysis and Storage Batteries
Petroleum jelly is applied to the electrical connections to the lead-acid battery

prevent local heating
prevent short-circuiting
prevent corrosion
reduce path resistance

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Electrolysis and Storage Batteries
It is noticed that durum charging

the anode becomes chocolate brown in colour (PbCfe) and cathode becomes grey metallic lead (Pb)
all of these
there is a rise in voltage
energy is absorbed by the cell

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Electrolysis and Storage Batteries
The internal resistance of a lead-acid cell is that of Edison cell

More than
Less than
None of the listed here
Equal to

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Electrolysis and Storage Batteries
Which among the following constitutes the major load for an automobile battery ?

Self starter
Spark plugs
Parking lights
Brake light

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Electrolysis and Storage Batteries
Excessive charging a battery tends to

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

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