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Electrolysis and Storage Batteries

Electrolysis and Storage Batteries
The current flow through electrolyte is due to the movement of

holes
None of these
ions
electrons

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Electrolysis and Storage Batteries
The active material of the positive plates of silver-zinc batteries is

lead
lead oxide
silver oxide
zinc powder

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Electrolysis and Storage Batteries
Which among the following constitutes the major load for an automobile battery ?

Self starter
Parking lights
Brake light
Spark plugs

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Electrolysis and Storage Batteries
Over charging

loosens the active material
produces excessive gassing
all of the listed here
increases the temperature resulting in buckling of plates

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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
Which of the following is incorrect?

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

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