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Electrolysis and Storage Batteries

Electrolysis and Storage Batteries
Those substances of the cell which take active part in chemical combination and hence produce electricity during charging or discharging are known as______materials.

passive
redundant
active
all

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Electrolysis and Storage Batteries
The effect of sulphation is that the internal resistance

decreases
increases
remains same
none of the listed here

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Electrolysis and Storage Batteries
Each cell has a vent cap

to check the level of electrolyte
to add water to the cell if needed
all of the listed here
to allow gases out when the cell is on charge

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Electrolysis and Storage Batteries
It is noticed that durum charging

all of these
the anode becomes chocolate brown in colour (PbCfe) and cathode becomes grey metallic lead (Pb)
there is a rise in voltage
energy is absorbed by the cell

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

only H₂SO₄
NaOH
only water
dilute H₂SO₄

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Electrolysis and Storage Batteries
Which of the following battery is used for aircraft ?

Dry cell battery
Nickel-iron battery
Lead-acid battery
Silver oxide battery

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