Quiz about ICSE.X. CHEMISTRY. 6. ELECTROLYSIS

Question 1

In electrolytes, the conduction of electricity is due to the movement of:

Accepted Answer

ions

Answer

electrons

Answer

atoms

Answer

molecules

Question 2

The process of separation of ions of the ionic solid in the aqueous solution is known as:

Accepted Answer

dissociation

Answer

ionisation

Answer

conduction

Answer

electrolysis

Question 3

The substances which conduct electric current in the solid state and at the same time are not chemically decomposed, are known as:

Accepted Answer

metallic conductors

Answer

insulators

Answer

good conductors

Answer

electrolytes

Question 4

Metallic conduction is an example of:

Accepted Answer

physical change

Answer

chemical change

Answer

physicochemical change

Answer

none of these

Question 5

Which of the following is not a conductor?

Accepted Answer

rubber

Answer

copper

Answer

sodium chloride

Answer

hydrochloric acid

Question 6

Which of the following is not an electrolyte?

Accepted Answer

copper wires

Answer

sodium hydroxide

Answer

sodium chloride

Answer

acetic acid

Question 7

The substances which do not conduct electric current in the molten dissolved state are called:

Accepted Answer

non-electrolytes

Answer

electrolytes

Answer

metallic conductors

Answer

insulators

Question 8

Which of the following acid is a weak electrolyte?

Accepted Answer

phosphoric acid

Answer

sulphuric acid

Answer

nitric acid

Answer

hydrochloric acid

Question 9

Weak electrolytes are: (a) slightly dissociated in molten state (b) completely dissociated in molten state (c) not dissociated in molten state (d) completely dissociated in aqueous solution.

Accepted Answer

slightly dissociated in molten state

Answer

completely dissociated in molten state

Answer

not dissociated in molten state

Answer

completely dissociated in aqueous solution

Question 10

Which of the following base is a weak electrolyte?

Accepted Answer

ammonium hydroxide

Answer

sodium hydroxide

Answer

potassium hydroxide

Answer

barium hydroxide

Question 11

Strong electrolytes have a high degree of ionisation or dissociation due to:

Accepted Answer

a large number of ions

Answer

a large number of molecules

Answer

a large number of atoms

Answer

a large number of electrons

Question 12

Which of the following is a strong electrolyte?

Accepted Answer

sodium chloride

Answer

sodium carbonate

Answer

sodium bicarbonate

Answer

potassium carbonate

Question 13

Ionic compounds have: (a) high melting point (b) low melting point (c) both low as well as high melting point (d) none of these

Accepted Answer

high melting point

Answer

low melting point

Answer

both low as well as high melting point

Answer

none of these

Question 14

Which of the following does not conduct electricity?

Accepted Answer

solid sodium chloride

Answer

molten sodium chloride

Answer

aqueous sodium chloride

Answer

none of these

Question 15

The electrode rich in electrons which supplies electrons to the electrodes is:

Accepted Answer

cathode

Answer

electrode

Answer

anode

Answer

oxidation rod

Question 16

Which of the following is a weak electrolyte?

Accepted Answer

acetic acid

Answer

sodium hydroxide

Answer

potassium hydroxide

Answer

none of these

Question 17

The anions lose their electrons to the anode. This process is referred to as:

Accepted Answer

oxidation

Answer

reduction

Answer

redox reaction

Answer

none of these

Question 18

The process of separation of ions of an ionic solid in solution is called:

Accepted Answer

dissociation

Answer

ionisation

Answer

separation

Answer

break up

Question 19

Electrolytes can never be:

Accepted Answer

non-polar covalent compounds

Answer

ionic compounds

Answer

polar covalent compounds

Answer

none of these

Question 20

Based on the ease with which metal atoms lose electrons to form positively charged ions, the various metals are arranged in a series known as:

Accepted Answer

electrochemical series

Answer

metallic series

Answer

power series

Answer

reactivity order series

Question 21

A non-metal which has been placed in activity series of metals is:

Accepted Answer

hydrogen

Answer

carbon

Answer

sulphur

Answer

nitrogen

Question 22

The metal whose atom loses electron most easily is placed at the _______ of the series.

Accepted Answer

top

Answer

middle

Answer

bottom

Answer

none of these

Question 23

Electrodes like graphite, gas carbon and platinum are known as:

Accepted Answer

non-attackable electrodes

Answer

attackable electrodes

Answer

active electrodes

Answer

reactive electrodes

Question 24

In electrolysis of aqueous copper sulphate using copper electrode, the product formed at anode is:

Accepted Answer

copper ions

Answer

copper atoms

Answer

oxygen

Answer

sulphate

Question 25

If electrolysis of copper sulphate solution is done using platinum electrodes, the product formed at anode is:

Accepted Answer

oxygen

Answer

copper

Answer

sulphate

Answer

none of these

Question 26

Out of sodium ions, calcium ions, nickel ions and copper ions, which ions will be readily discharged at cathode?

Accepted Answer

copper ions

Answer

sodium ions

Answer

calcium ions

Answer

nickel ions

Question 27

Electrolysis of lead bromide is carried out in a molten state because:

Accepted Answer

in molten lead bromide, ions become free making it a good conductor of electricity

Answer

it is easier to pass current in a molten state

Answer

it is a covalent compound

Answer

none of these

Question 28

Solid lead bromide does not conduct electricity because:

Accepted Answer

it has lead and bromide ions held together by strong electrostatic forces of attraction

Answer

it is a covalent compound

Answer

it does not have electrons

Answer

it is an insulator

Question 29

Which electrodes are used in the electrolysis of water?

Accepted Answer

graphite electrodes

Answer

platinum electrodes

Answer

gas carbon

Answer

lead electrodes

Question 30

Which apparatus is used for electrolysis of acidulated water?

Accepted Answer

Hoffman's voltameter

Answer

Acidulator apparatus

Answer

Electrolytic apparatus

Answer

none of these

Question 31

Name the acid used for acidification of water during electrolysis of water.

Accepted Answer

sulphuric acid

Answer

nitric acid

Answer

carbonic acid

Answer

acetic acid

Question 32

The electrode at which reduction takes place is:

Accepted Answer

cathode

Answer

anode

Answer

both of these

Answer

none of these

Question 33

All metals are liberated at cathode. There is only one non-metal which is also liberated at the cathode. It is:

Accepted Answer

hydrogen

Answer

carbon

Answer

oxygen

Answer

nitrogen

Question 34

The gas liberated at the anode during electrolysis of water is:

Accepted Answer

oxygen

Answer

hydrogen

Answer

both of these

Answer

none of these

Question 35

Electrodes made of copper, nickel, silver are known as:

Accepted Answer

active electrodes

Answer

inert electrodes

Answer

non-attackable electrodes

Answer

metallic electrodes

Question 36

Which of the following is not the requirement of an electrolyte?

Accepted Answer

electrolyte must have sodium ions in it

Answer

electrolyte must be a good conductor of electricity

Answer

electrolyte must be highly soluble

Answer

electrolyte must be stable towards oxidation, reduction and hydrolysis.

Question 37

If a copper article has to be electroplated with silver, then the copper article is made:

Accepted Answer

cathode

Answer

anode

Answer

electrolyte

Answer

none of these

Question 38

While electroplating a copper cup with silver, the electrolyte used is:

Accepted Answer

Na[Ag(CN)2] and HCN

Answer

AgNO3 and HNO3

Answer

AgCl and HCl

Answer

AgCl and HNO3

Question 39

The process of refining of the impure metal by the use of electrolysis or electric current is known as:

Accepted Answer

electrorefining

Answer

electrometallurgy

Answer

electrochemistry

Answer

electrosynthesis

Question 40

During electrorefining, pure copper is made: (a) cathode (b) anode (c) electrolyte (d) none of these.

Accepted Answer

cathode

Answer

anode

Answer

electrolyte

Answer

none of these

Question 41

The metallic electrode which does not take part in an electrolytic reaction:

Accepted Answer

Pt

Answer

Cu

Answer

Ag

Answer

Ni

Question 42

During silver plating of an article using potassium argentocyanide as an electrolyte, the anode material should be:

Accepted Answer

Ag

Answer

Cu

Answer

Pt

Answer

Fe

Question 43

The ion which is discharged at the anode during the electrolysis of copper sulphate solution using copper electrodes as anode and cathode:

Accepted Answer

Cu2+

Answer

OH-

Answer

SO4 2-

Answer

H+

Question 44

Electrode which is connected to the positive terminal of the battery is:

Accepted Answer

anode

Answer

cathode

Answer

electrode

Answer

electrolyte

Question 45

Cleaning of the metal surface before electroplating is known as:

Accepted Answer

pickling

Answer

cleansing

Answer

electro cleaning

Answer

none of these

Question 46

Which of the following is not related to electrolysis?

Accepted Answer

electroscope

Answer

electrodes

Answer

electrolyte

Answer

electricity

Question 47

Identify the weak electrolyte from the following: (a) Sodium chloride solution (b) Dilute hydrochloric acid (c) Dilute sulphuric acid (d) Aqueous acetic acid.

Accepted Answer

Aqueous acetic acid

Answer

Sodium chloride solution

Answer

Dilute hydrochloric acid

Answer

Dilute sulphuric acid

Question 48

Which of these will act as a non-electrolyte?

Accepted Answer

Liquid carbon tetrachloride

Answer

Acetic acid

Answer

Sodium hydroxide aqueous solution

Answer

Potassium chloride aqueous solution

Question 49

Which of the following is an example of a strong electrolyte?

Accepted Answer

NaCl

Answer

Acetic acid

Answer

Ammonium hydroxide

Answer

Sucrose

Question 50

Non-metallic conductors are known as:

Accepted Answer

Substances through which electricity cannot pass and undergo chemical changes.

Answer

Substances through which electricity can pass without chemical changes.

Answer

Substances through which electricity cannot pass and no chemical change takes place.

Answer

Substances that allow electricity to pass through them and undergo chemical changes.

Question 51

Electrolysis is a process of:

Accepted Answer

The passage of electricity through an electrolyte with accompanying chemical changes.

Answer

The passage of electricity through a conductor without chemical changes.

Answer

The decomposition of non-metallic conductors.

Answer

The process of electroplating.

Question 52

What is the electrode through which the current enters the electrolyte called?

Accepted Answer

Anode

Answer

Cathode

Answer

Electroplating electrode

Answer

Non-conducting vessel

Question 53

Loss of electrons is known as:

Accepted Answer

Oxidation

Answer

Reduction

Answer

Ionisation

Answer

Electrolysis

Question 54

What is the selective discharge of ions in electrolysis influenced by?

Accepted Answer

Relative positions of ions in the electrochemical series, ion concentration, and electrode nature

Answer

Electrode temperature

Answer

Electrode material

Answer

Current strength

Question 55

What is the purpose of electroplating?

Accepted Answer

Electrolytic deposition of a thin metal layer on another metal object

Answer

Extraction of metals from their ores

Answer

Purification of metals through electrolysis

Answer

Creation of strong electrolytes

Question 56

What are ions bearing positive charges called?

Accepted Answer

Cations

Answer

Anions

Answer

Electrons

Answer

Neutrons

ICSE.X. CHEMISTRY. 6. ELECTROLYSIS

57 questions

In electrolytes, the conduction of electricity is due to the movement of:

The process of separation of ions of the ionic solid in the aqueous solution is known as:

The substances which conduct electric current in the solid state and at the same time are not chemically decomposed, are known as:

Metallic conduction is an example of:

Which of the following is not a conductor?

Which of the following is not an electrolyte?

The substances which do not conduct electric current in the molten dissolved state are called:

Which of the following acid is a weak electrolyte?

Weak electrolytes are: (a) slightly dissociated in molten state (b) completely dissociated in molten state (c) not dissociated in molten state (d) completely dissociated in aqueous solution.

Which of the following base is a weak electrolyte?

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Mathematics