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Electrolysis and Storage Batteries

Electrolysis and Storage Batteries
Negative plate of an Edison cell is made of

lead
copper
iron
silver oxide

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Electrolysis and Storage Batteries
Petroleum jelly is applied to the electrical connections to the lead-acid battery

prevent short-circuiting
reduce path resistance
prevent local heating
prevent corrosion

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Electrolysis and Storage Batteries
Capacity of dry cells is

None of these
unaffected by the type of discharge
more when it is supplying current for continuous periods
more when it is supplying current for intermittent periods

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Electrolysis and Storage Batteries
Following will happen if the specific gravity of electrolyte becomes more than 1.23.

Loss of capacity
All of the listed here
Loss of life
Corrosion of the grids of the plate

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Electrolysis and Storage Batteries
When a lead-acid battery is in fully charged condition, the color of its positive plate is

brown
dark grey
none of the listed here
dark brown

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

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

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MORE MCQ ON Electrolysis and Storage Batteries

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