Class 10 Chemistry Multiple Choice Questions For CBSE & ICSE

Chemistry Multiple Choice Questions_gkgigs

Last Updated: 22 December 2023

Are you looking for Important Chemistry Multiple Choice Questions to read before your class 10 Board Exam?

Well, You came to the right place! This article contains all the chapters that are on your chemistry syllabus for both ICSE and CBSE Boards.

This Article Contains Chemistry Multiple Choice Questions From The following Chapters

Periodic Table
Mole Concept
Stochiometry

Electrolysis
Chemical Bonding
Metallurgy

Acids, Bases, & Salts
Organic Chemistry
Analytical Chemistry

Study of Compounds

Chemistry Multiple Choice Questions will help you to boost your preparation because this article contains mixed questions from all the chapters of your syllabus that one should not miss while preparing for the exam.

All questions are solved and written in simple English step by step to guide and help you achieve good marks in your class 10 Board Examination.

Chemistry Multiple Choice Questions

1. Which among the period 2 elements have the highest electron affinity?
a) Lithium
b) Fluorine
c) Carbon
d) Neon

Answer

2. From the following which is composed of all the three kinds of bond i.e., Ionic, Covalent, & Coordinate Bond?
a) Sodium chloride
b) Ammonium chloride
c) Carbon tetrachloride
d) Ammonia

Answer

3. Which statement is wrong about Alkalies?
a) They are all saturated hydrocarbons
b) They can undergo addition as well as a substitution reaction
c) They are almost non-polar in nature
d) On complete combustion give out CO₂ and H₂O

Answer

4. Which acid contains four hydrogen atoms in it?
a) Formic Acid
b) Sulphuric Acid
c) Acetic Acid
d) Nitric Acid

Answer

5. Which Acid is known as “Oil of Vitriol”?
a) Sulphuric Acid
b) Hydrochloric Acid
c) Nitric Acid
d) Phosphoric Acid

Answer

6. A gas cylinder of the capacity of 20 dm³ is filled with gas X, the mass of which is 10 g. When the same cylinder is filled with hydrogen gas at the same temperature and pressure the mass of the hydrogen is 2 g. What is the Relative Molecular Mass of the gas?
a) 10
b) 15
c) 20
d) 25

Answer

7. The aqueous solution of the following compounds which contains both ions and molecules is:
a) Hydrochloric Acid
b) Nitric Acid
c) Sulphuric Acid
d) Acetic Acid

Answer

8. Which Metal Oxide can react with Acid as well as Alkali?
a) Calcium oxide
b) Copper(II) oxide
c) Silver oxide
d) Aluminium oxide

Answer

9. CO₂ and SO₂ gas can be distinguished by using?
a) Lime Water
b) Acidified Potassium Dichromate Paper
c) Moist Blue Litmus
d) Red Litmus Paper

Answer

10. The organic compound obtained as the end product of the fermentation of sugar solution is?
a) Ethanol
b) Methanol
c) Ethane
d) Methanoic Acid

Answer

11. A black color solid which on reaction with dilute Sulphuric Acid forms a blue-colored solution is?
a) Carbon
b) Manganese(IV) oxide
c) Copper(II) oxide
d) Lead(II) oxide

Answer

12. A particular solution contains molecules and ions of the solute so it is a?
a) Weak Acid
b) Strong Acid
c) Weak Base
d) Strong Base

Answer

13. Which compound liberates reddish-brown gas around the anode during electrolysis in its molten state?
a) Lead(II) bromide
b) Copper(II) oxide
c) Sodium chloride
d) Copper(II) sulphate

Answer

14. An organic compound undergoes addition reactions and gives a red color precipitate with ammonical cuprous chloride. What is the organic compound?
a) Ethane
b) Ethene
c) Ethyne
d) Ethanol

Answer

15. Which of the following is an organic weak acid?
a) Formic Acid
b) Sulphuric Acid
c) Nitric Acid
d) Hydrochloric Acid

Answer

16. During Ionization metals lose electrons, what is this change called?
a) Displacement
b) Redox
c) Reduction
d) Oxidation

Answer

17. Which of the following is not true about metals?
a) Metals are good conductors of electricity
b) Metals form non-polar covalent compounds
c) Metals are malleable and ductile
d) Metals will have 1 or 2 or 3 electrons in their valence shell

Answer

18. Aqua regia is a mixture of?
a) Dilute hydrochloric acid and concentrated nitric acid
b) Concentrated hydrochloric acid and dilute nitric acid
c) Concentrated hydrochloric acid [1 part] and concentrated nitric acid [3 parts]
d) Concentrated hydrochloric acid [3 part] and concentrated nitric acid [1 part]

Answer

19. The organic compound mixed with ethanol to make it spurious is?
a) Methanol
b) Methanal
c) Methanoic Acid
d) Ethanoic Acid

Answer

20. The number of electrons present in the valence shell of a halogen is?
a) 1
b) 3
c) 5
d) 7

Answer

21. Which of the following properties do not match with elements of the halogen family?
a) They are metallic in nature
b) They have seven electrons in their valence shell
c) They are highly reactive chemically
d) They are diatomic in their molecular form

Answer

22. The number of C-H bonds in ethane molecules are:
a) Four
b) Six
c) Eight
d) Ten

Answer

23. The unsaturated hydrocarbons undergo:
a) Substitution Reaction
b) Oxidation Reaction
c) Addition Reaction
d) None of the above

Answer

24. What is the functional group present in acetic acid?
a) Ketonic >C=O
b) Hydroxyl -OH
c) Aldehydic -CHO
d) Carboxyl -COOH

Answer

25. When dilute sulphuric acid reacts with iron sulphide, the gas evolved is?
a) Hydrogen sulphide
b) Sulphur dioxide
c) Sulphur trioxide
d) Vapours of sulphuric acid

Answer

26. Hydrogen chloride gas is highly soluble in water is dried by?
a) Phosphorous pentaoxide
b) Anhydrous calcium chloride
c) Quick Lime
d) Concentrated sulphuric acid

Answer

27. The brown ring test is used for the detection of?
a) CO₃^-2
b) NO₃^–
c) SO₃^2-
d) Cl^–

Answer

28. In the periodic table alkali metals are placed in the group?
a) 1
b) 11
c) 17
d) 18

Answer

29. Hydroxide of this metal is soluble in sodium hydroxide solution?
a) Lead
b) Magnesium
c) Silver
d) Copper

Answer

30. Which metal is liquid at room temperature?
a) Potassium
b) Zinc
c) Mercury
d) Gold

Answer

31. Which of the following metallic oxides cannot be reduced by normal reducing agents?
a) Copper(II) oxide
b) Zinc oxide
c) Iron(III) oxide
d) Magnesium oxide

Answer

32. Which is a weak electrolyte among the four?
a) Aqueous acetic acid
b) Dilute Sulphuric Acid
c) Sodium chloride solution
d) Dilute Hydrochloride solution

Answer

33. Which is an Alkaline earth metal?
a) Lead
b) Copper
c) Calcium
d) Potassium

Answer

34. What is the vapor density of CO₂? [C=12, O=16]
a) 12
b) 16
c) 44
d) 22

Answer

35. Which element of period-3 has zero electron affinity?
a) Neon
b) Argon
c) Sulphur
d) Sodium

Answer

36. Among the period 2 elements, Which element has the highest electron affinity?
a) Lithium
b) Carbon
c) Chloride
d) Fluorine

Answer

37. Which statement is incorrect about Alkanes?
a) They are hydrocarbons
b) There is a single covalent bond between carbon and hydrogen
c) They can undergo both substitutions as well as addition reactions
d) On complete combustion they produce carbon dioxide and water

Answer

38. Which of these will act as a non-electrolyte?
a) Liquid carbon tetrachloride
b) Acetic Acid
c) Sodium hydroxide aqueous solution acid
d) Potassium chloride aqueous solution

Answer

39. Which will not produce acid when made to react with water?
a) Nitrogen dioxide
b) Carbon monoxide
c) Zinc oxide
d) Sulphur trioxide

Answer

40. Which metallic oxide is amphoteric in nature?
a) Copper(II) oxide
b) Barium oxide
c) Calcium oxide
d) Zinc oxide

Answer

41. S + 2H₂SO₄ → 3SO₂ + 2H₂O. What is the role played by concentrated sulphuric acid?
a) Oxidising agent
b) Non-volatile acid
c) Dehydrating agent
d) None of the above

Answer

42. Nitrogen gas can be obtained by heating?
a) Ammonium nitrate
b) Ammonium nitrite
c) Magnesium nitride
d) Ammonium chloride

Answer

43. Which of the following is not a typical property of an ionic compound?
a) High melting point
b) Conducts electricity in the molten and in the aqueous solution state
c) They are insoluble in water
d) They exist as oppositely charged ions even in the solid-state

Answer

44. The metals zinc and tin are present in the alloy?
a) Solder
b) Brass
c) Bronze
d) Duralumin

Answer

45. Ionization Potential increases over a period from left to right because the:
a) Atomic radius increases and nuclear charge increases
b) Atomic radius decreases and nuclear charge decreases
c) Atomic radius increases and nuclear charge decreases
d) Atomic radius decreases and nuclear charge increases

Answer

46. A compound X consists of only molecules. Hence X will have:
a) A crystalline hard structure
b) A low melting point and low boiling point
c) An ionic bond
d) A strong force of attraction between its molecules

Answer

47. When fused lead bromide is electrolyzed 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

48. The main ore used for the extraction of iron is?
a) Haematite
b) Calamine
c) Bauxite
d) Cryolite

Answer

49. Heating an ore in a limited supply of air or in the absence of air at a temperature just below its melting point is known as?
a) Bessemerisation
b) Ore dressing
c) Smelting
d) Calcination

Answer

50. If element A belongs to Period 3 and Group II then it will have?
a) 3 shells and 2 valence electrons
b) 2 shells and 3 valence electrons
c) 3 shells and 3 valence electrons
d) 2 shells and 2 valence electrons

Answer

51. The molecule containing a triple covalent bond is?
a) Ammonia
b) Methane
c) Water
d) Nitrogen

Answer

52. The electrolyte used for electroplating an article with silver is?
a) Silver nitrate solution
b) Silver cyanide solution
c) Nickel sulphate solution
d) Sodium argentocyanide solution

Answer

53. Aluminium powder is used in thermite welding because:
a) It is corrosion resistant
b) It is a strong oxidizing agent
c) It is a strong reducing agent
d) It is a good conductor of heat

Answer

54. The I.U.P.A.C name of acetylene?
a) Propane
b) Propyne
c) Ethyne
d) Ethene

Answer

55. Among the elements given below, the element with the least electronegativity is?
a) Carbon
b) Lithium
c) Fluorine
d) Boron

Answer

56. Identify the property that does not describe the property of alkenes?
a) They are unsaturated hydrocarbons
b) They decolorize bromine water
c) They can undergo addition as well as substitution reactions
d) They undergo combustion with oxygen forming CO₂ and H₂O

Answer

57. Which is not the alloy of copper?
a) Brass
b) Solder
c) Bronze
d) Duralumin

Answer

58. Bonding in this molecule can be understood to involve coordinate bonding:
a) Ammonium chloride
b) Hydrogen
c) Hydrogen chloride
d) Carbon tetrachloride

Answer

59. Which of the 4 would weigh the least?
a) 2-gram atoms of Nitrogen
b) 6.02 x 10²³ atoms of carbon
c) 1 mole of silver
d) 22.1 liters of oxygen gas at 1 atm and 273K
[ Atomic masses: Ag=108, N=14, O=16, C=12 ]

Answer

60. An element with the atomic number 19 will most likely combine chemically with the element whose atomic number is:
a) 17
b) 11
c) 20
d) 18

Answer

61. The ratio between the number of molecules in 2 g of hydrogen and 32 g of oxygen is?
a) 0.01:1
b) 1:3
c) 1:2
d) 1:1
[ Given H=1, O=16 ]

Answer

62. What are the two main metals in bronze?
a) Copper and Tin
b) Copper and Nickel
c) Copper and Zinc
d) Copper and Lead

Answer

63. What are the particles present in strong electrolytes?
a) Only Molecules
b) Mainly Ions
c) Ions and Molecules
d) Only Atoms

Answer

64. What is the Aim of the Fountain Experiment?
a) HCl turns blue litmus red
b) HCl is highly soluble in water
c) HCl is denser than air
d) HCl fumes in moist air

Answer

65. Which chloride forms a precipitate that is soluble in excess of ammonium hydroxide?
a) Calcium chloride
b) Ferrous chloride
c) Ferric chloride
d) Copper chloride

Answer

66. If the molecular formula of an organic compound is C₁₀H₁₈, it is a?
a) Alkene
b) Alkane
c) Alkyne
d) Not a hydrocarbon

Answer

67. Which of the following is a common characteristic of a covalent compound?
a) High melting point
b) Consists of molecules
c) Always soluble in water
d) Conducts electricity when it is in the molten state

Answer

68. What should we add to increase the pH value of a neutral solution?
a) Acid
b) Alkali
c) Acid Salt
d) Salt

Answer

69. How is Anhydrous iron (III) chloride prepared?
a) Direct Combination
b) Simple Displacement
c) Decomposition
d) Neutralization

Answer

70. Which cation does not form a precipitate with ammonium hydroxide but forms with sodium hydroxide?
a) Ca²⁺
b) Ba⁺²
c) Cs⁺
d) Al⁺³

Answer

71. Which salt solution does not react with ammonium hydroxide?
a) Calcium nitrate
b) Zinc nitrate
c) Lead nitrate
d) Copper nitrate

Answer

72. The organic compound which undergoes substitution reaction?
a) C₂H₂
b) C₂H₄
c) C₁₀H₁₈
d) C₂H₆

Answer

73. The electrolysis of acidified water is an example of?
a) Reduction
b) Redox Reaction
c) Oxidation
d) Synthesis

Answer

74. What is the IUPAC name of “dimethyl ether”?
a) Ethoxy methane
b) Methoxy methane
c) Methoxy ethane
d) Ethoxy ethane

Answer

75. What is the catalyst used in the Contact Process?
a) Copper
b) Iron
c) Vanadium pentoxide
d) Manganese dioxide

Answer

76. Which electrolyte completely dissociates into ions?
a) Alcohol
b) Carbonic Acid
c) Sucrose
d) Sodium hydroxide

Answer

77. Which is the most electronegative element from the following elements?
a) Magnesium
b) Chlorine
c) Aluminium
d) Sulphur

Answer

78. What is the reason for using Aluminium in the alloy Duralumin?
a) Aluminium brings lightness
b) Aluminium is brittle
c) Aluminium gives strength
d) Aluminium lowers the melting point

Answer

79. Which drying agent is used to dry HCl gas?
a) Conc. H₂SO₄
b) ZnO
c) Al₂O₃
d) CaO

Answer

80. Which hydrocarbon is a greenhouse gas?
a) Acetylene
b) Ethylene
c) Ethane
d) Methane

Answer

81. Why gas is used for welding purposes?
a) Ethyne
b) Ammonia
c) Octane
d) Heptane

Answer

82. What happens when the gaseous product obtained by dehydration of ethyl alcohol is passed through bromine water?
a) Bromine water smells like antiseptic
b) Reddish-brown color of bromine water remains
c) Reddish-brown color of bromine water disappears
d) Reddish-brown color of bromine water changes to a colorless solution

Answer

83. What is the valency of alkali metal?
a) +2
b) +1
c) -1
d) -2

Answer

84. Aluminium oxide is?
a) Acidic oxide
b) Basic oxide
c) Neutral oxide
d) Amphoteric oxide

Answer

85. What is the main components of the alloy Bronze?
a) Mn
b) Al
c) Sn
d) Cu

Answer

86. The main purpose of Roasting and Calcination is to convert?
a) Ore into metallic carbonate
b) Ore into metal
c) Ore into oxide
d) None of these

Answer

87. Chemically, Rust is?
a) Fe₃O₄
b) Fe₂O₃
c) Fe₂O₃. xH₂O
d) Fe₃O₄. xH₂O

Answer

88. What is the major impurity present in iron?
a) Carbon
b) Calcium
c) Sodium
d) Phosphorus

Answer

89. Which pair of metals are rendered passive on reaction with concentrated nitric acid?
a) Fe, Al
b) Mg, Fe
c) Zn, Al
d) Cu, Zn

Answer

90. What must be added to sodium chloride to obtain hydrogen chloride?
a) Dil. Sulphuric Acid
b) Conc. Sulphuric Acid
c) Dil. Nitric Acid
d) Conc. Nitric Acid

Answer

91. Which experiment demonstrates that hydrogen chloride is very soluble in water?
a) Catalytic Oxidation of Ammonia
b) Fountain Experiment
c) Catalytic Reduction of HCl
d) Bosch Process

Answer

92. Which compound on reaction with HCl leaves a yellow residue behind?
a) MnO₂
b) Na₂S₂O₃
c) AgCl
d) Conc. H₂SO₄

Answer

93. Which salt is soluble in hot water but insoluble in cold water?
a) Pb(NO₃)₂
b) PbCl₂
c) KCl
d) HClO

Answer

94. Which method is used to collect hydrogen chloride gas?
a) Downward Displacement of Water
b) Downward Displacement of Air
c) Upward Displacement of Water
d) Upward Displacement of Air

Answer

95. Impured iron is purified by which process?
a) Reduction
b) Redox
c) Oxidation
d) None of the above

Answer

96. Which solution gives a precipitate with HCl?
a) AgNO₃
b) NH₄Cl
c) Zn
d) Aqua Regia

Answer

97. Which promoter is used in Haber’s process?
a) Molybdenum
b) Calcium oxide
c) Lead
d) Finely divided Iron

Answer

98. What is the saturated solution of ammonia in water?
a) Liquid Ammonia
b) Nersler’s Reagent
c) Liquid Quicklime
d) Liquor Ammonia Fortis

Answer

99. Which compound is distilled to prepare “Oil of Vitriol”?
a) Ferrous sulphate
b) Ferric hydroxide
c) Ferrous hydroxide
d) Ferrous nitrate

Answer

100. What is the chemical name of Oleum?
a) Hydrated Sulphuric acid
b) Acetyl Aldehyde
c) Ortho sulphuric
d) Pyrosulphuric Acid

Answer

101. The corrosive action of sulphuric acid on the skin is due to its?
a) Dehydrating Nature
b) Volatile Nature
c) Reducing Nature
d) Oxidising Nature

Answer

102. Which promoter is used in the Contact process?
a) Vanadium pentaoxide
b) Potassium oxide
c) Ferric hydroxide
d) Quartz

Answer

103. What is the formula for the next higher homologue for Ethanal?
a) CH₃OH
b) CH₃CHO
c) C₃H₄
d) C₃H₈

Answer

104. What is the IUPAC name of CH₃-C≡CH?
a) Prop-2-yne
b) Propene
c) Propanal
d) Propyne

Answer

105. What is the pH of the copper chloride solution?
a) More than 7
b) Less than 7
c) Equal to 7
d) None of these

Answer

106. Soluble salt like sodium sulphate can be prepared in the laboratory by which process?
a) Titration
b) Synthesis
c) Displacement
d) Decomposition

Answer

107. Sulphate ion (SO₄^2-) can be detected by using?
a) Dilute Sulphuric Acid
b) Concentrated Sulphuric Acid
c) Both of These
d) None of the Above

Answer

108. Cupric hydroxide is a?
a) Blue Solution
b) Bluish White Precipitate
c) White Precipitate
d) Pale Blue Precipitate

Answer

109. What is the ratio by volume of Nitrogen and Hydrogen in Haber’s process?
a) 3:1
b) 4:2
c) 1:3
d) 2:4

Answer

110. Which chemical is used as a drying agent for ammonia?
a) Magnesium pentaoxide
b) Calcium hydroxide
c) Calcium oxide
d) Sodium chloride

Answer

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