ELECTROLYSIS AND STORAGE BATTERIES QUIZ

Over charging

loosens the active material

increases the temperature resulting in buckling of plates

all of the listed here

produces excessive gassing

TRUE ANSWER : ?
YOUR ANSWER : ?

The effect of sulphation is that the internal resistance

decreases

increases

remains same

none of the listed here

TRUE ANSWER : ?
YOUR ANSWER : ?

The mass of an ion liberated at an electrode is directly proportional to the quantity of electricity”. The above statement is associated with

Faraday’s law of electromagnetic

Faraday’s law of electrolysis

Gauss’s law

Newton’s law

TRUE ANSWER : ?
YOUR ANSWER : ?

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

all H₂SO₄

two parts H2O, two parts H₂SO₄

one part H2O, three parts H₂SO₄

three parts H2O, one part H₂SO₄

TRUE ANSWER : ?
YOUR ANSWER : ?

The active material of the positive plates of silver-zinc batteries is

silver oxide

zinc powder

lead

lead oxide

TRUE ANSWER : ?
YOUR ANSWER : ?

Internal resistance of a cell is reduced by

putting plates very close together

all of the listed here

increasing the plate area

using vent plug to permit gas formed during discharge

TRUE ANSWER : ?
YOUR ANSWER : ?

Electrolyte used in an Edison cell is

HN03

HC1

kOH

NaOH

TRUE ANSWER : ?
YOUR ANSWER : ?

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

5 %

8 %

6 %

10 %

TRUE ANSWER : ?
YOUR ANSWER : ?

In a lead-acid cell, if the specific gravity of sulphuric acid is 1.8, it will require following ratio of acid to water to get mixture of specific gravity of 1.3

4 parts of acid to 4 parts of water

4 parts of acid to 6 parts of water

6 parts of acid to 4 parts of water

4 parts of acid to 8 parts of water

TRUE ANSWER : ?
YOUR ANSWER : ?

The capacity of a lead-acid cell does not depend on its

rate of discharge

temperature

quantity of active material

rate of charge

TRUE ANSWER : ?
YOUR ANSWER : ?

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