Electrolysis and storage of batteries Archives

11. The common impurity in the electrolyte of lead-acid battery is

chlorine

dust particles

lead crystals

iron

Detailed SolutionThe common impurity in the electrolyte of lead-acid battery is

12. Which of the following battery is used for aircraft ?

Lead-acid battery

Nickel-iron battery

Dry cell battery

Silver oxide battery

Detailed SolutionWhich of the following battery is used for aircraft ?

13. Petroleum jelly is applied to the electrical connections to the lead-acid battery

prevent local heating

prevent short-circuiting

reduce path resistance

prevent corrosion

Detailed SolutionPetroleum jelly is applied to the electrical connections to the lead-acid battery

14. A dead storage battery can be revived by

Adding distilled water

Adding so-called battery restorer

A dose of H2SO4

None of the above

Detailed SolutionA dead storage battery can be revived by

15. Lead-acid cell has a life of nearly charges and discharges

500

700

1000

1250

Detailed SolutionLead-acid cell has a life of nearly charges and discharges

16. On overcharging a battery

It will bring about chemical change in active materials

It will increase the capacity of the battery

It will raise the specific gravity of the electrolyte

None of the above will occur

Detailed SolutionOn overcharging a battery

17. It is noticed that during discharging the following does not happen

Both anode and cathode become PbSO4

Specific gravity of H2SO4 decreases

Voltage of the cell decreases

The cell absorbs energy

Detailed SolutionIt is noticed that during discharging the following does not happen

18. Capacity of dry cells is

more when it is supplying current for intermittent periods

more when it is supplying current for continuous periods

unaffected by the type of discharge

none of the above

Detailed SolutionCapacity of dry cells is

19. Trickle charging of a storage battery helps to

maintain proper electrolyte level

increase its reserve capacity

prevent sulphation

keep it fresh and fully charged

Detailed SolutionTrickle charging of a storage battery helps to

20. Cells are connected in series in order to

increase the voltage rating

increase the current rating

increase the life of the cells

none of the above

Detailed SolutionCells are connected in series in order to

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