ELECTROLYSIS AND STORAGE BATTERIES QUIZ

Persons preparing electrolyte should wear

rubber boots and gloves

rubber

all of these

goggles or other face shield

TRUE ANSWER : ?
YOUR ANSWER : ?

Local action in a battery is indicated by

none of the listed here

excessive drop in the specific gravity of electrolyte even when the cell is on open circuit

excessive gassing under load conditions

both of the listed here

TRUE ANSWER : ?
YOUR ANSWER : ?

Dry cell is modification of

Lead-acid cell

Leclanche cell

Edison cell

Deniell cell

TRUE ANSWER : ?
YOUR ANSWER : ?

The active materials on the positive and negative plates of a fully charged lead-acid battery are

lead peroxide and lead

None of these

lead sulphate and lead

lead and lead peroxide

TRUE ANSWER : ?
YOUR ANSWER : ?

When the lead-acid cell is fully charged, the electrolyte assumes _____ appearance

bright

dull

milky

reddish

TRUE ANSWER : ?
YOUR ANSWER : ?

Extent of corrosion in the underground metal work depends upon

type of soil chemicals

type of metals

amount of moisture

all of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The ampere-hour efficiency of a leadacid cell is normally between

70 to 75%

90 to 95%

80 to 85%

20 to 35%

TRUE ANSWER : ?
YOUR ANSWER : ?

As compared to constant-current system, the constant-voltage system of charging a lead acid cell has the advantage of

reducing time of charging

Both of the listed here

avoiding excessive gassing

increasing cell capacity

TRUE ANSWER : ?
YOUR ANSWER : ?

Self charge of a Ni-Fe cell is _____ Edison cell.

Less than

Equal to

More than

Much more than

TRUE ANSWER : ?
YOUR ANSWER : ?

During discharge, the active material of both the positive and negative plates is changed to

Pb

PbS04

Pb02

PbS02

TRUE ANSWER : ?
YOUR ANSWER : ?

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