ELECTROLYSIS AND STORAGE BATTERIES QUIZ

In a lead-acid cell dilute sulfuric acid (electrolyte) approximately comprises the following

all H₂SO₄

two parts H2O, two parts H₂SO₄

three parts H2O, one part H₂SO₄

one part H2O, three parts H₂SO₄

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Pb

Pb02

PbSC-4

PbO

TRUE ANSWER : ?
YOUR ANSWER : ?

Cell short circuit results in

abnormal high temperature

low sp. gravity electrolyte

reduced gassing on charge

all of the listed here

TRUE ANSWER : ?
YOUR ANSWER : ?

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

70 to 75%

20 to 35%

80 to 85%

90 to 95%

TRUE ANSWER : ?
YOUR ANSWER : ?

While preparing electrolyte for a lead-acid battery

acid is poured into water

none of the listed here

water is poured into acid

anyone of the two can be added to other chemical

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following has lower sp. gravity V

Water

Dilute H₂SO₄

All of the listed here

Concentrated H₂SO₄

TRUE ANSWER : ?
YOUR ANSWER : ?

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

1250

500

700

1000

TRUE ANSWER : ?
YOUR ANSWER : ?

The output voltage of a charger is

less than the battery voltage

none of the listed here

the same as the battery voltage

higher than the battery voltage

TRUE ANSWER : ?
YOUR ANSWER : ?

Those substances of the cell which take active part in chemical combination and hence produce electricity during charging or discharging are known as______materials.

passive

active

all

redundant

TRUE ANSWER : ?
YOUR ANSWER : ?

Following will occur if level of electrolyte falls below plates

life of the cell is reduced

open plates are converted to lead sulphate

capacity of the cell is reduced

all of these

TRUE ANSWER : ?
YOUR ANSWER : ?

↑