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Electrolysis and Storage Batteries

Electrolysis and Storage Batteries
The lead-acid cell should never be discharged beyond

2 V
1.8 V
2.1 V
1.9 V

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Electrolysis and Storage Batteries
When the specific gravity of the electrolyte of a lead-acid cell is reduced to 1.1 to 1.15 the cell is in

none of the listed here
charged state
active state
discharged state

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Electrolysis and Storage Batteries
During discharge, the active material of both the positive and negative plates is changed to

PbS04
Pb
PbS02
Pb02

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Electrolysis and Storage Batteries
Which of the following has lower sp. gravity V

Water
All of the listed here
Dilute H₂SO₄
Concentrated H₂SO₄

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Electrolysis and Storage Batteries
Which of the following is incorrect?

A storage cell has a reversible chemical reaction
A primary cell has an irreversible chemical reaction
A carbon-zinc cell has unlimited shelf life
A lead-acid cell can be recharged

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

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

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