ELECTROLYSIS AND STORAGE BATTERIES QUIZ

It is noticed that durum charging

all of these

the anode becomes chocolate brown in colour (PbCfe) and cathode becomes grey metallic lead (Pb)

energy is absorbed by the cell

there is a rise in voltage

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following factors adversely affects the capacity of the leadacid battery ?

All of these

Rate of discharge

Temperature of surroundings

Specific gravity of electrolyte

TRUE ANSWER : ?
YOUR ANSWER : ?

The effect of sulphation is that the internal resistance

increases

decreases

none of the listed here

remains same

TRUE ANSWER : ?
YOUR ANSWER : ?

The best indication about the state of charge on a lead-acid battery is given by

temperature of electrolyte

none of the listed here

output voltage

specific gravity of electrolyte

TRUE ANSWER : ?
YOUR ANSWER : ?

While preparing electrolyte for a lead-acid battery

water is poured into acid

none of the listed here

anyone of the two can be added to other chemical

acid is poured into water

TRUE ANSWER : ?
YOUR ANSWER : ?

In constant-current charging method, the supply voltage from discharged to fully charged condition

remains constant

decreases

increases

none of the listed here

TRUE ANSWER : ?
YOUR ANSWER : ?

Hydrogen evolved during charging produces explosive mixture when it is more than

5 %

10 %

6 %

8 %

TRUE ANSWER : ?
YOUR ANSWER : ?

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

1.2

1.0187

0.8

1.5

TRUE ANSWER : ?
YOUR ANSWER : ?

Following will happen if the specific gravity of electrolyte becomes more than 1.23.

Loss of life

Corrosion of the grids of the plate

All of the listed here

Loss of capacity

TRUE ANSWER : ?
YOUR ANSWER : ?

A dead storage battery can be revived by

none of the listed here

adding so-called battery restorer

adding distilled water

a dose of H₂SO₄

TRUE ANSWER : ?
YOUR ANSWER : ?

↑