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Electrolysis and Storage Batteries

Electrolysis and Storage Batteries
Weston standard cell at 20°C has voltage of ____ volts.

1.2
0.8
1.0187
1.5

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Electrolysis and Storage Batteries
A dead storage battery can be revived by

none of the listed here
adding distilled water
adding so-called battery restorer
a dose of H₂SO₄

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Electrolysis and Storage Batteries
While preparing electrolyte for a lead-acid battery

acid is poured into water
water is poured into acid
anyone of the two can be added to other chemical
none of the listed here

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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.

redundant
active
all
passive

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Electrolysis and Storage Batteries
It is noticed that durum charging

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

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Electrolysis and Storage Batteries
The average charging voltage for alkali cell is about

1 V
1.2 V
2.1 V
1.7 V

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