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Electrolysis and Storage Batteries

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

1.2
1.5
0.8
1.0187

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Electrolysis and Storage Batteries
Following will happen if the specific gravity of electrolyte becomes more than 1.23.

Loss of capacity
All of the listed here
Corrosion of the grids of the plate
Loss of life

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Electrolysis and Storage Batteries
The active materials of a nickel-iron battery are

powdered iron and its oxide
21% solution of kOH
nickel hydroxide
all of these

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

insert
passive
active
dielectric

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

undisturbed
lowered
displaced sideways
raised

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Electrolysis and Storage Batteries
The common impurity in the electrolyte of lead-acid battery is

dust particles
lead crystals
chlorine
iron

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