ELECTROLYSIS AND STORAGE BATTERIES QUIZ

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

Pb02

Pb

PbO

PbSC-4

TRUE ANSWER : ?
YOUR ANSWER : ?

On overcharging a battery

It will raise the specific gravity of the electrolyte

It will increase the capacity of the battery

It will bring about chemical change in active materials

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Local action in a battery is indicated by

excessive gassing under load conditions

none of the listed here

both of the listed here

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

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following cell has a reversible chemical reaction ?

Lead-acid

Silver-oxide

Carbon-zinc

Mercury oxide

TRUE ANSWER : ?
YOUR ANSWER : ?

In a lead-acid battery the energy is stored in the form of

electrostatic energy

electromagnetic energy

charged ions

chemical energy

TRUE ANSWER : ?
YOUR ANSWER : ?

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

1250

1000

500

700

TRUE ANSWER : ?
YOUR ANSWER : ?

Electrolyte used in a lead-acid cell is

NaOH

only water

dilute H₂SO₄

only H₂SO₄

TRUE ANSWER : ?
YOUR ANSWER : ?

Over charging

loosens the active material

produces excessive gassing

all of the listed here

increases the temperature resulting in buckling of plates

TRUE ANSWER : ?
YOUR ANSWER : ?

_______ of electrolyte indicates the state of charge of the battery

colour

mass

viscosity

specific gravity

TRUE ANSWER : ?
YOUR ANSWER : ?

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

avoiding excessive gassing

increasing cell capacity

reducing time of charging

Both of the listed here

TRUE ANSWER : ?
YOUR ANSWER : ?