CBSE Class 10 Chemistry MCQs Set A

Refer to CBSE Class 10 Chemistry MCQs Set A provided below. CBSE Class 10 Science MCQs with answers available in Pdf for free download. The MCQ Questions for Class 10 Science with answers have been prepared as per the latest syllabus, CBSE books and examination pattern suggested in Class 10 by CBSE, NCERT and KVS. Multiple Choice Questions for All Chapters are an important part of exams for Class 10 Science and if practiced properly can help you to get higher marks. Refer to more Chapter-wise MCQs for CBSE Class 10 Science and also download more latest study material for all subjects

MCQ for Class 10 Science All Chapters

Class 10 Science students should refer to the following multiple-choice questions with answers for All Chapters in Class 10. These MCQ questions with answers for Class 10 Science will come in exams and help you to score good marks

All Chapters MCQ Questions Class 10 Science with Answers

Question :  The electrolytic decomposition of water gives H2 and O2 in the ratio of

a) 2 : 1 by volume

b) 1 : 2 by volume

c) 8 : 1 by mass

d) 1 : 2 by mass

Answer :  2 : 1 by volume

 

Question :  Methane on combustion gives

a) both CO2 & H2O

b) CO2

c) H2O

d) neither CO2 nor H2O

Answer :  both CO2 & H2O

 

Question :  Which of the following gases can be used for storage of fresh sample of an oil for a long time?

a) Nitrogen or helium

b) Carbon dioxide or oxygen

c) Helium or oxygen

d) Nitrogen or oxygen

Answer :  Nitrogen or helium

 

Question :  Both CO2 and H2 gases are

a) Colourless

b) Heavier than air

c) Acidic in nature

d) Soluble in water

Answer :  Colourless

 

Question :  Which of the following are exothermic processes?

(i) Evaporation of water

(ii) Dilution of an acid (H2SO4)

(iii) Reaction of water with quick lime

(iv) Sublimation of camphor (crystals)

a) (ii) & (iii)

b) (i) & (ii)

c) (iii) & (iv)

d) (i) & (iv)

Answer :  (ii) & (iii)

 

Question :  Chemically rust is:

a) Hydrated ferric oxide

b) Hydrated ferrous oxide

c) Only ferric oxide

d) None of these

Answer :  Hydrated ferric oxide

 

Question :  Which information is not conveyed by a balanced chemical equation?

a) Physical states of reactants and products

b) Symbols and formulae of all the substances involved in a particular reaction.

c) Number of atoms/molecules of the reactants and products formed.

d) Whether a particular reaction is actually feasible or not.

Answer :  Physical states of reactants and products

 

Question :  In the reaction, SO2 (g) + 2H2S (g) -> 2H2(g) + S(s), the reducing agent is

a) H2S

b) SO2 

c) H2O

d) S

Answer :  H2S

 

Question :  The chemical formula of lead sulphate is

a) PbSO4

b) Pb2SO4

c) Pb(SO4)2

d) Pb2(SO4)3

Answer :  PbSO4

 

Question :  10g of hydrogen is burnt in the presence of excess oxygen. The mass of water formed is

a) 18g

b) 90g

c) 45g

d) 10g

Answer :  18g

 

Question :  Identify the following type of reaction 2KClO3 Heat -> Catalyst 2KCl (s) + 3O2(g)

a) It is a decomposition reaction and is endothermic in nature

b) It is a combination reaction

c) It is a decomposition reaction and is accompanied by release of heat

d) It is a photochemical decomposition reaction and exothermic in nature

Answer :  It is a decomposition reaction and is endothermic in nature

 

Question :  When carbon dioxide is passed through lime water,

a) White milkiness is noticed

b) Calcium hydroxide is formed

c) White precipitate of CaO is formed

d) Colour of lime water disappears

Answer :  White milkiness is noticed

 

Question :  Dilute hydrochloric acid is added to granulated zinc taken in a test tube. The following observations are recorded. Point out the correct observation

a) A colourless and odourless gas is evolved

b) The surface of metal becomes shining

c) The reaction mixture turns milky

d) Odour of a pungent smelling gas is recorded

Answer :  A colourless and odourless gas is evolved

 

Question :  Which of the following will be required to identify the gas evolved when dilute hydrochloric acid reacts with zinc metal?

a) A burning splinter

b) Lime water

c) Red litmus paper

d) Ph paper

Answer :  A burning splinter

 

Question :  When crystals of lead nitrate are heated strongly in a dry test tube

a) A brown residue is left

b) Crystals immediately melt

c) White fumes appear in the tube

d) A yellow residue is life

Answer :  A brown residue is left

 

Question :  Silver article turns black when kept in the open for a few days due to formation of

a) Ag2S

b) H2S

c) AgS

d) AgSO4

Answer :  Ag2S

 

Question :  We store silver chloride in a dark coloured bottle because it is

a) To avoid action by sunlight

b) A white solid

c) Undergoes redox reaction

d) None of the above

Answer :  To avoid action by sunlight

 

Question :  Fatty foods become rancid due to the process of

a) Oxidation

b) Corrosion

c) Reduction

d) Hydrogenation

Answer :  Oxidation

 

Question : Which of the following reaction is used in white washing walls?

a) Ca(OH)2 + CO2 ->CaCO3 + H2O

b) 2Ca + O2 -> 2CaO

c) CaO + H2O -> Ca (OH)2

d) Ca(OH)2 + CO2 -> CalO3 + H2O

Answer : Ca(OH)2 + CO2 ->CaCO3 + H2O

 

Question :  Reddish-brown copper metal forms a black solid on combustion. Which of the following statement is incorrect?

a) Black solid is CuO

b) The reaction is a redox reaction

c) The reaction is a precipitation reaction

d) Copper is being oxidised

Answer :  Black solid is CuO

 

Question :  The electrolytic decomposition of water gives H2 and O2 in the ratio of

a) 2 : 1 by volume

b) 1 : 2 by volume

c) 8 : 1 by mass

d) 1 : 2 by mass

Answer :  2 : 1 by volume

 

Question :  Methane on combustion gives

a) both CO2 & H2O

b)  CO2

c) H2O

d) neither CO2 nor H2O

Answer :  both CO& H2O

 

Question :  Which of the following gases can be used for storage of fresh sample of an oil for a long time?

a) Nitrogen or helium

b) Carbon dioxide or oxygen

c) Helium or oxygen

d) Nitrogen or oxygen

Answer :  Nitrogen or helium

 

Question :  Both CO2 and H2 gases are

a) Colourless

b) Heavier than air

c) Acidic in nature

d) Soluble in water

Answer :  Colourless

 

Question :  Which of the following are exothermic processes?

(i) Evaporation of water (ii) Dilution of an acid (H2SO4) (iii) Reaction of water with quick lime (iv) Sublimation of camphor (crystals)

a) (ii) & (iii)

b) (i) & (ii)

c) (iii) & (iv)

d) (i) & (iv)

Answer :  (ii) & (iii)

 

Question :  Chemically rust is:

a) Hydrated ferric oxide

b) Hydrated ferrous oxide

c) Only ferric oxide

d) None of these

Answer :  Hydrated ferric oxide

 

Question :  Which information is not conveyed by a balanced chemical equation?

a) Physical states of reactants and products

b) Symbols and formulae of all the substances involved in a particular reaction.

c) Number of atoms/molecules of the reactants and products formed.

d) Whether a particular reaction is actually feasible or not.

Answer :  Physical states of reactants and products

 

Question :  In the reaction, SO2 (g) + 2H2S (g) -> 2H2(g) + S(s), the reducing agent is

a) H2S

b) SO2

c) H2O

d) S

Answer :  H2S

 

Question :  The chemical formula of lead sulphate is

a) PbSO4

b) Pb2SO4

c) Pb(SO4)2

d) Pb2(SO4)3

Answer :  PbSO4

 

Question :  10g of hydrogen is burnt in the presence of excess oxygen. The mass of water formed is

a) 18g

b) 90g

c) 45g

d) 10g

Answer :  18g

Chapter 01 Chemical Reactions and Equations
CBSE Class 10 Science Chemical Reactions and Equations MCQs
Chapter 02 Acids, Bases and Salts
CBSE Class 10 Science Acids Bases and Salts MCQs
Chapter 03 Metals and Nonmetals
CBSE Class 10 Science Metals and Non Metals MCQs
Chapter 04 Carbon and its Compounds
CBSE Class 10 Science Carbon and its Compounds MCQs
Chapter 05 Periodic Classification of Elements
CBSE Class 10 Chemistry Periodic Classification of Elements MCQs
Chapter 07 Control and Coordination
CBSE Class 10 Biology Control and Coordination MCQs
Chapter 08 How do Organisms Reproduce
CBSE Class 10 Biology How do Organisms Reproduce MCQs
Chapter 09 Heredity and Evolution
CBSE Class 10 Science Heredity and Evolution MCQs
Chapter 10 Light Reflection and Refraction
CBSE Class 10 Physics Light Reflection and Refraction MCQs
Chapter 11 The Human Eye and the Colourful World
CBSE Class 10 Science The Human Eye and the Colourful World MCQs
Chapter 13 Magnetic Effects of Electric Current
CBSE Class 10 Science Magnetic Effects of Electric Current MCQs
Chapter 16 Sustainable Management of Natural Resources
CBSE Class 10 Biology Management of Natural Resources MCQs

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