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Electrolysis and Storage Batteries

Electrolysis and Storage Batteries
The ampere-hour efficiency of a leadacid cell is normally between

20 to 35%
70 to 75%
80 to 85%
90 to 95%

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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

discharged state
active state
charged state
none of the listed here

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

only water
only H₂SO₄
dilute H₂SO₄
NaOH

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

lowered
raised
undisturbed
displaced sideways

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

Pb02
PbS02
PbS04
Pb

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

1.9 V
2 V
2.1 V
1.8 V

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