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Electrolysis and Storage Batteries

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

1.2
0.8
1.5
1.0187

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Electrolysis and Storage Batteries
Charging a sulphated battery at high rate results in

warping of plates
damage to separators, cell caps covers and battery case due to excessive temperature
All of the listed here
boiling of electrolyte due to gassing

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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

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

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

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

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Electrolysis and Storage Batteries
Trickle charging of a storage battery helps to

increase its reserve capacity
prevent sulphation
maintain proper electrolyte level
keep it fresh and fully charged

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Electrolysis and Storage Batteries
Those substances of the cell which take active part in chemical combination and hence produce electricity during charging or discharging are known as______materials.

redundant
passive
active
all

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