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Electrolysis and Storage Batteries

Electrolysis and Storage Batteries
Petroleum jelly is applied to the electrical connections to the lead-acid battery

prevent corrosion
prevent short-circuiting
reduce path resistance
prevent local heating

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

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

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

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

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Electrolysis and Storage Batteries
Negative plate of an Edison cell is made of

lead
copper
silver oxide
iron

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Electrolysis and Storage Batteries
Internal resistance of a cell is reduced by

increasing the plate area
putting plates very close together
all of the listed here
using vent plug to permit gas formed during discharge

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Electrolysis and Storage Batteries
When the lead-acid cell is fully charged, the electrolyte assumes _____ appearance

bright
reddish
milky
dull

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