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Electrolysis and Storage Batteries

Electrolysis and Storage Batteries
A battery of 6 cells will show a drop of _____ volts from fully charged state to fully discharged state.

2.0
2.8
2.4
2.5

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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
When two batteries are connected in parallel, it should be ensured that

they have same e.m.f.
they have same make
they have same ampere-hour capacity
they have identical internal resistance

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Electrolysis and Storage Batteries
During the charging of a lead-acid cell

its cathode becomes dark chocolate brown in colour
it gives out energy
specific gravity of H₂SO₄ decreases
its voltage increases

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Electrolysis and Storage Batteries
In a lead-acid cell dilute sulfuric acid (electrolyte) approximately comprises the following

all H₂SO₄
one part H2O, three parts H₂SO₄
two parts H2O, two parts H₂SO₄
three parts H2O, one part H₂SO₄

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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

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

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