ELECTROLYSIS AND STORAGE BATTERIES QUIZ

Extent of corrosion in the underground metal work depends upon

type of metals

type of soil chemicals

all of these

amount of moisture

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YOUR ANSWER : ?

Excessive formation of lead sulphate on the surface of the plates happens because of

allowing a battery to stand in discharged condition for a long time

all of the listed here

persistent undercharging

low level of electrolyte

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It is noticed that during discharging the following does not happen

both anode and cathode become PbS04

the cell absorbs energy

voltage of the cell decreases

specific gravity of H2SO4 decreases

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A typical output of a solar cell is

0.5 V

1.5 V

1.1 V

0.26 V

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Life of the Edison cell is at least

seven years

eight years

five years

ten years

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During charging the specific gravity of the electrolyte of a lead-acid battery

none of the listed here

increases

remains the same

decreases

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All the electrical connections between the battery and vehicle should be by

rigid cables

flexible cables

thin copper wires

thin aluminium wires

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Trickle charging of a storage battery helps to

keep it fresh and fully charged

increase its reserve capacity

maintain proper electrolyte level

prevent sulphation

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Satellite power requirement is provided through

nickel-cadmium cells

solar cells

dry cells

lead-acid batteries

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YOUR ANSWER : ?

In a lead-acid cell, if the specific gravity of sulphuric acid is 1.8, it will require following ratio of acid to water to get mixture of specific gravity of 1.3

4 parts of acid to 8 parts of water

6 parts of acid to 4 parts of water

4 parts of acid to 6 parts of water

4 parts of acid to 4 parts of water

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