Electrolysis MCQ Type Questions for ICSE Class-10 Chemistry

Electrolysis MCQ Type Questions for ICSE Class-10 Chemistry. These MCQ  / Objective Type Questions is based on latest reduced syllabus according 2021-22 session on bifurcated pattern. Main motto of MCQ Type Question is cracking the next upcoming exam of council. Visit official website CISCE for detail information about ICSE Board Class-10 Chemistry .

MCQ Type Questions Electrolysis  for ICSE Class-10 Chemistry

Board ICSE
Class 10th (X)
Subject Chemistry
Chapter Electrolysis
Syllabus  on bifurcated syllabus (after reduction)
Session 2021-22
Topic MCQ / Objective Type Question

ICSE Class-10 Chemistry MCQ Type Questions of Electrolysis 


Question 1: Water is decomposed into hydrogen and oxygen by means of an electric current by the method of:

(a) electrolysis

(b) electric heating

(c) electroplating

(d) None of these

Answer: (a) electrolysis

Question 2: Water is …………….

(a) strong electrolyte

(b) weak electrolyte

(c) non-electrolyte.

(d) None of these

Answer: (b) weak electrolyte

Question 3:  The current flow through electrolyte is due to the movement of:

(a) Holes

(b) Electrons

(c) Ions

(d) None of these

Answer: (c) Ions

Question 4:  …………… is a non-electrolyte.

(a) Acetic acid

(b) Sugar

(c) Calcium

(d) Potassium

Answer: (b) Sugar

Question 5:  Metals like potassium, calcium, sodium, etc., can be extracted only by electrolysis. Why?

(a) Conventional reducing agents

(b) Does not supply sufficient energy

(c) A large number of hydronium ions

(d) Both (a) and (b)

Answer: (d) Both (a) and (b)

Question 6:  Electrolysis is the passage of………….. through a liquid or solution accompanied by a ………………  change

(a) chemical, electricity

(b) electricity, chemical

(c) electrons, chemical

(d) electricity, physical

Answer: (b) electricity, chemical

Question 7:  The solution of a substance which conducts electricity Is called ………….

(a) an electrolyte

(b) an insulator

(c) a conductor

(d) None of these

Answer: (a) an electrolyte

Question 8:  An electrolyte is a ……….

(a) metal

(b) sugar

(c) cell

(d) liquid that conducts electricity

Answer: (d) liquid that conducts electricity

Question 9: When heating one end of a metal plate, the other end gets hot because of

(a) the resistance of the metal

(b) mobility of atoms in the metal

(c) energised electrons moving to the other end

(d) minor perturbation in the energy of atoms.

Answer: (c) energised electrons moving to the other end

Question 10:  A weak electrolyte is one which…….

(a) dissociates completely

(b) is feebly ionised in the solution

(c) ionises completely

(d) is having high electrical conductivity

Answer: (b) is feebly ionised in the solution

Question 11:  The particles present in strong electrolytes are:

(a) Only molecules

(b) Mainly ions

(c) Ions and molecules

(d) Only atoms

Answer: (b) Mainly ions

Question 12: Sodium chloride is ……….

(a) strong electrolyte

(b) weak electrolyte

(c) non-electrolyte

(d) None of these
Answer: (a) strong electrolyte

Question 13:  With platinum electrodes, hydrogen is liberated at the………. and oxygen at the……… during the electrolysis of acidified water.

(a) cathode, anode

(b) anode, cathode

(c) anode, anode

(d) cathode, cathode

Answer: (a) cathode, anode

Question 14:  Pure water consists almost entirely of……………

(a) ions

(b) atoms

(c) ions and molecules

(d) molecules

Answer: (d) molecules

Question 15:   An eclectically charged atom is called………….

(a) an ion

(b) a proton

(c) an electron

(d) a cyclotron
Answer: (a) an ion

Question 16:  In the electrolysis of acidulated water, oxygen is produced by the discharge of………….ions at the anode.

(a) OH-

(b) SO

(c) Both (a) and (b)

(d) None of these

Answer: (a) OH-

Question 17: During electrolysis, anions undergo ……………. at the………..

(a) reduction, anode

(b) oxidation, cathode

(c) oxidation, anode

(d) oxidation, cathode

Answer: (c) oxidation, anode

Question 18:  Ionisation is a ……………. Process.

(a) reversible

(b) irreversible

(c) Both (a) and (b)

(d) None of these

Answer: (a) reversible

Question 19: As we descend in the electrochemical series containing cations, the tendency of the cations to get …………. at the cathode increases.

(a) oxidised

(b) reduced

(c) increased
(d) None of these

Answer: (b) reduced

Question 20: The negative electrode in electrolysis is called the………….

(a) anode

(b) cathode

(c) gas electrode
(d) None of these

Answer: (b) cathode

Question 21: In a voltaic cells, the salt bridge…………..

(a) is not necessary in order for the cell to work

(b) acts as a mechanism to allow mechanical mixing of the solutions

(c) allows charge balance to be maintained in the cel

(d) is tightly plugged with firm agar gel through which ions cannot pass

Answer: (c) allows charge balance to be maintained in the cell

Question 22:  Cations migrate to. during electrolysis.

(a) electrode

(b) cathode

(c) anode

(d) None of these

Answer: (b) cathode

Question 23:  During electrolysis of NaCI, the gas discharged at the anode is:

(a) Chlorine

(c) Hydrogen

(c) Oxygen

(d) None of these

Answer: (a) Chlorine

Question 24:  A strong electrolyte is one which………

(a) is completely ionised in the solution

(b) dissociates partially in solution

(c) is having low electrical conductivity

(d) Ionises partially

Answer: (a) is completely ionised in the solution

Question 25: The reactions Occurrin8 at the cathode during electrolysis involve……….

(a) reduction

(b) oxidation

(c) reverse
(d) None of these

Answer: (a) reduction

Question 26: The electrode where the current enters the electrolyte is called the.

(a) electric current

(b) conductor

(d) anode

(c) cathode

Answer: (d) anode

Question 27: When fused lead bromide is electrolysed we Observe ?

(a)A silver-grey deposit at the anode and a reddish-brown deposit at the cathode

(b) A silver-grey deposit at the cathode and a reddish-brown deposit at the anode

(c) A silver-grey deposit at the cathode and reddish-brown fumes at the anode

(d) Silver grey fumes at the anode and reddish brown fumes at the cathode

Answer: (c) A silver-grey deposit at the cathode and reddish-brown fumes at the anode

Question 28: ldentify the weak electrolyte from the following:

(a) Sodium chloride solution

(b) Dilute hydrochloric acid

(c) Dilute sulphuric acid

(d) Aqueous acetic acid

Answer: (d) Aqueous acetic acid

Question 29:  What is the product formed at the cathode in the electrolysis of aqueous CusO4 ?

(a) Copper metal

(b) Hydrogen gas

(c) Oxygen gas

(d) Sulphur

Answer: (a) Copper metal

Question 30:  Which of these will act as a non-electrolyte?

(a) Liquid carbon tetrachloride

(b) Acetic acid

(c) Sodium hydroxide aqueous solution

(d) Potassium chloride aqueous solution

Answer: (a) Liquid carbon tetrachloride

Question 31:  Copper is a good conductor of electricity, but it is a non-electrolyte. Why?

(a) Contains free electrons

(b) Metal

(c) Does not dissociate into ions

(d) All the above

Answer: (d) All the above

Question 32:  The metallic electrode which does not take part in an electrolytic reaction ? (Inert electrode)

(a)  Cu

(b) Ag

(c) Pt

(d) Ni

Answer: (c) Pt

Question 33:  The gas given off at cathode during the electrolysis of acidulated water is …………..

(a) Nitrogen

(b) Oxygen

(c) Hydrogen

(d) None of these

Answer: (c) Hydrogen 

Question 34:  When dilute sodium chloride is electrolysed using graphite electrodes, which cation is discharged at the cathode most readily?

(a) Na+

(b) OH-

(c) H+

(d) Cl-

Answer: (c) H+

Question 35: A compound which liberates reddish brown gas around the anode during electrolysis in its molten state is:

(a) Sodium Chloride

(c) Copper (II) Oxide

(c) Copper (II) Sulphate

(d) Lead (II) bromide

Answer: (d) Lead (II) bromide

Question 36:  Dilute acids are strong electrolytes. Why?

(a) Produce the large number of hydronium ions

(b) Produce the smaller number of hydronium ions

(c) Produce the large number of hydrogen ions

(d) Produce the large number of copper ions

Answer: (a) Produce the large number of hydronium ions

Question 37: In a solution or molten state, a…………….. electrolyte consists almost entirely of ions.

(a) non

(b)weak

(c) strong

(d) None of these

Answer: (c) strong

Question 38:  During ionisation metals lose electrons, this change can be called:

(a) Oxidation

(b) Reduction

(c) Redox

(d) Displacement

Answer: (a) Oxidation

Question 39:  Sea water is a strong electrolyte. Why?

(a) Compounds dissociate into ions

(b) Sodium chloride dissolved in it

(c) Discharge electrons

(d) None of the above

Answer: (b) Sodium chloride dissolved in it

–: End of Electrolysis MCQ Type Questions for ICSE Class-10 Chemistry :-

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