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Electrolysis and Storage Batteries

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

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

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Electrolysis and Storage Batteries
When a lead-acid battery is in fully charged condition, the color of its positive plate is

brown
dark grey
dark brown
none of the listed here

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Electrolysis and Storage Batteries
Electrolyte used in a lead-acid cell is

only water
dilute H₂SO₄
only H₂SO₄
NaOH

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Electrolysis and Storage Batteries
The capacity of a battery is expressed in terms of

voltage rating
none of the listed here
current rating
ampere-hour rating

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Electrolysis and Storage Batteries
Which of the following factors adversely affects the capacity of the leadacid battery ?

All of these
Specific gravity of electrolyte
Rate of discharge
Temperature of surroundings

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

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

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