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Electrolysis and Storage Batteries

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

1.5
1.0187
1.2
0.8

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Electrolysis and Storage Batteries
While preparing electrolyte for a lead-acid battery

acid is poured into water
anyone of the two can be added to other chemical
none of the listed here
water is poured into acid

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Electrolysis and Storage Batteries
As compared to a lead-acid cell, the efficiency of a nickel-iron cell is less due to its

compactness
higher internal resistance
lower e.m.f.
small quantity of electrolyte used

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Electrolysis and Storage Batteries
Undercharging

Increases the temperature
Reduces specific gravity of the electrolyte
Produces excessive gassing
Increases specific gravity of the electrolyte

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Electrolysis and Storage Batteries
Over charging

loosens the active material
increases the temperature resulting in buckling of plates
produces excessive gassing
all of the listed here

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Electrolysis and Storage Batteries
Extent of corrosion in the underground metal work depends upon

amount of moisture
type of metals
all of these
type of soil chemicals

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