ELECTROLYSIS AND STORAGE BATTERIES QUIZ

For a cell to work, which of the following condition(s) become necessary ?

Electrolyte liquid or paste should be conducting

Two electrodes of different meta’s should be inserted in the electrolyte, not touching each other

All of the listed here

Electrolyte must chemically react with one of the electrodes

TRUE ANSWER : ?
YOUR ANSWER : ?

Level of electrolyte in a cell should be _____ the level of plates

none of the listed here

above

equal to

below

TRUE ANSWER : ?
YOUR ANSWER : ?

During the idle period of the battery, strong electrolyte tends to change the active material of the cell into

PbSC-4

PbO

Pb

Pb02

TRUE ANSWER : ?
YOUR ANSWER : ?

Which among the following constitutes the major load for an automobile battery ?

Self starter

Brake light

Parking lights

Spark plugs

TRUE ANSWER : ?
YOUR ANSWER : ?

In a lead-acid cell, lead is called as

passive material

positive active material

negative active material

None of the listed here

TRUE ANSWER : ?
YOUR ANSWER : ?

The following indicate that battery on charge has attained full charge

specific gravity

gassing

colour of electrode

all of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Weston standard cell at 20°C has voltage of ____ volts.

0.8

1.2

1.0187

1.5

TRUE ANSWER : ?
YOUR ANSWER : ?

The watt-hour efficiency of a lead-acid cell varies between

90 to 95%

25 to 35%

70 to 80%

40 to 60%

TRUE ANSWER : ?
YOUR ANSWER : ?

The current flow through electrolyte is due to the movement of

holes

None of these

electrons

ions

TRUE ANSWER : ?
YOUR ANSWER : ?

Internal resistance of a cell is due to

all of the listed here

resistance of electrolyte

surface contact resistance between electrode and electrolyte

electrode resistance

TRUE ANSWER : ?
YOUR ANSWER : ?

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