CUET 2026 Chemistry MCQs 100 Questions for CUET Exam

Chemistry MCQ Question Answers for CUET 2026

Chemistry MCQs– Practice the Chemistry Multiple Choice Questions suitable for various Entrance Exams including CUET. Learn and practice Chemistry questions and answers. Chemistry MCQ questions are very helpful for various competitive exams. CUET is a Common University Entrance Test that is now mandatory to take admission to Central Universities in India. Chemistry MCQ questions are based on the latest CUET 2026 exam pattern and other entrance exams, so that you can have a fair idea about exam trends that will be followed for various entrance exams.

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1. The bond angle in ammonia is

a.110 degree

b.106 degree

c.107 degree

d.99 degree

2. Vinegar contains

a.19% acetic acid

b.7 to 8% acetic acid

c.100% acetic acid

d.10 to 12% acetic acid

3. The maximum number of molecules are in:

a.48 gram of ethyl alcohol

b.36 gram of water

c.52 gram of nitrogen peroxide

d.14 gram of carbon dioxide

4. On burning hydrogen in an atmosphere of chlorine, 1.65 gm of HCl was obtained and 1 Kcal of heat was liberated. The heat of formation of HCl should be:

a.500 cal/mol

b.500 cal/gm

c.-21.12 Kcal/mol

d.-44.2 Kcal/mol

5. Which will have the maximum solubility in water?

a.Methanol

b.Tert. butyl alcohol

c.Isobutyl alcohol

d.1 butanol

6. If temperature is kept constant during the reaction, the process is said to be….

a.none of the above

b.Isothermal

c.Isobaric

d.Adiabatic

7. In an aqueous solution of sulphuric acid, mole fraction of water is 0.85. The molality of the solution is

a.14 m

b.8.9 m

c.9.8 m

d.7.9 m

8. Which of the following solutions will have the lowest freezing point?

a.1% aqueous solution of methyl alcohol

b.1% aqueous solution of urea

c.1% aqueous solution of sodium chloride

d.1% aqueous solution of fructose

9. Calcium acetate on heating gives

a.acetic anhydride

b.acetone

c.ethane

d.pentane

10. The number of unpaired electrons in fluorine atoms is/are

a.2

b.1

c.4

d.0

11. Propene on treatment with dil. sulphuric acid gives

a.2-propanol

b.A and B

c.None of above

d.1-propanol

12. Radium and chlorine combine to form radium chloride, the compound is

a.no longer radioactive

b.half as radioactive as the radium content

c.thrice as radioactive as the radium content

d.as radioactive as the radium content

13. Bromination of isobutene gives as major product

a.n-butyl bromide

b.None of the above

c.isobutyl bromide

d.tert. butyl bromide

14. Reduction of which of the following will give only ethyl alcohol?

a.methyl methanoate

b.ethyl acetate

c.formic acid

d.propyl methanoate

15. Alcohols have higher boiling point than alkanes of the corresponding molecular mass because

a.alcohols have ionic bond

b.alcohols have hydrogen bond

c.alcohols contains –OH group

d.alcohols are miscible with water

16. How many electrons can fit into the sub-shell for which n = 3 and l = 1?

a.5

b.24

c.6

d.16

17. Equilibrium constant changes with

a.both temperature and concentration

b.pressure

c.time

d.temperature

18. Hydrogen bomb is based on the phenomenon of

a.Nuclear fission

b.Nuclear fusion

c.Chemical reaction

d.Nuclear explosion

19. The age of most ancient geological formation is estimated by

a.Potassium-Argon method

b.Uranium lead method

c.Carbon 14 dating method

d.Radium-silicon method

20. As the alkyl part goes on increasing in alcohol the solubility of alcohol in water

a.remains constant

b.decreases

c.goes on increasing

d.may increase or decrease

21. In the case of exothermic reactions equilibrium constant K

a.depends on the nature

b.decreases with temperature

c.remains unchanged with temperature

d.increases with pressure

22. Calcium formate of heating gives

a.banzaldehyde

b.formic acid

c.methanoic anhydride

d.formaldehyde

23. In acetylene C-C-H bond angle is

a.144 degree

b.96 degree

c.180 degree

d.90 degree

24. Acetic acid exists as dimer in benzene due to

a.presence of carbonyl group

b.condensation reaction

c.presence of hydrogen atom at α-carbon

d.hydrogen bonding

25. Schiffs base on reduction give

a.p-amine

b.tert. amine

c.sec. amine

d.aniline

26. An electrophile is a/an

a.electron deficient species

b.Lewis acid

c.Lewis base

d.Both A and B

27. Which of the following is a sedative?

a.Paraldehyde

b.Paraformaldehyde

c.Benzaldehyde

d.Metaldehyde

28. The apparatus used for measuring the heat changes is known as

a.Ammeter

b.Voltmeter

c.Thermometer

d.Calorimeter

29. In the case of o-chlorophenol there exist

a.both inter and intramolecular hydrogen bonding

b.intermolecular covalent bonding

c.no hydrogen bonding

d.intramolecular hydrogen bonding

30. Which of the following has minimum boiling point?

a.neopentane

b.n-pentane

c.isopentane

d.both A and B

31. Once the equilibrium is reached under given condition:

a.Conc. of reactants remains same

b.Conc. of all the substances presents do not change

c.Conc. remains the same in spite of the change in temperature

d.Conc. of products remains same

32. Emission is caused by the transformation of one neutron into a proton. This results in the formation of a new element having

a.same nuclear charge

b.nuclear charge higher by one unit

c.lower nuclear charge

d.nuclear charge lower by one unit

33. Out of the following, the weakest interact are involved in

a.polar covalent bond

b.hydrogen bond

c.Van der Waals interaction

d.ionic bond

34. In isopentane the number of secondary carbon atom is

a.1

b.2

c.0

d.3

35. If mercury is used at cathode during the electrolysis of aqueous NaCl the ions discharged at the cathode are

a.none of these

b.sodium

c.chloride

d.hydroxide

36. The number of moles of NaCl in 3 litres of the 3 M solution is

a.27

b.9

c.5

d.36

37. The exchange of particles considered responsible for keeping the nucleons together are

a.positron

b.neutron

c.meson

d.electron

38. On passing one faraday of electricity through molten lead (II) bromide, amount of bromine obtained is

a.1 mole gm atom

b.1 gm equivalent

c.5 gm mole

d.3 mole

39. Which of the following is not a diatomic molecule?

a.Iodine

b.Nitrogen

c.Oxygen

d.Phosphorus

40. Shape of amines is

a.tetrahedral

b.square planar

c.planar triangular

d.pyramidal

41. The half-life of a radioactive element is 50 days. How long will it take far its activity reduce to 1/4 of it original value?

a.25 days

b.75 days

c.100 days

d.50 days

42. Aniline reacts with dl. HCl and HONO at 00C to form

a.azo compound

b.diazo compound

c.nitro compound

d.benzene

43. 100 gram of caustic soda is dissolved in 1 kg of water, the molality of the solution is

a.3.3

b.2

c.25

d.2.5

44. A mole of electrons is the same as

a.ampere-second

b.faraday

c.one

d.curie

45. All the radioactive changes are of

a.Zero order

b.Third order

c.First order

d.Second order

46. Aniline condenses with benzaldehyde to give

a.benzal aniline

b.N benzoyl aniline

c.N benzal aniline

d.benzoyl aniline

47. In Lyman series an electron jumps from higher energy level to

a.K energy level

b.M energy level

c.N energy level

d.L energy level

48. An azeotrope is one that

a.can be separated by distillation below critical solution temperature

b.can be separated by distillation at critical solution temperature

c.can be separated by distillation above critical solution temperature

d.cannot be separated by distillation

49. Salt Bridge is used because it

a.enhances the flow of electrons by overcoming liquid junction potential

b.provides the extra ions

c.maintains the electrical neutrality of the two half cells

d.forms insoluble precipitates with the electrolytes in the two half cells

50. 75% of a radioactive element disintegrates in 6 days. Its half-life is

a.2 days

b.6 days

c.18 days

d.3 days

51. Formic acid is prepared by distilling glycerol with

a.tartaric acid at 10 degree Centigrade

b.oxalic acid at 240 degree Centigrade

c.oxalic acid at 110 degree Centigrade

d.lactic acid at 50 degree Centigrade

52. The hydrogen halide which has maximum boiling point is

a.HBr

b.HCl

c.HF

d.HI

53. Williamsons synthesis is used for preparing

a.alcohol

b.ester

c.ether

d.amines

54. When a radioactive substance is subjected to a vacuum, the rate of disintegration per second

a.is not affected

b.increase considerably

c.increases only if the products are gaseous

d.decreases

55. Half-life of a first order reaction is 35 min. The time required to reduce its concentration to 12.5% is

a.125 min

b.50 min

c.70 min

d.105 min

56. Schiffs bax is obtaind by the action of

a.p-amines with acid chloride

b.p-amines with acid anhydrides

c.All the above

d.p-amines with aldehydes

57. A person requires 2870 Kcal of energy for leading a normal life. If heat of combustion of cane sugar is -1349 Kcal then he must consume……kg of cane sugar daily.

a.142

b.224

c.728

d.448

58. The chemical system in equilibrium is not affected by

a.addition of a catalyst

b.change in the concentration of products

c.increase in the concentration of reactants

d.changing the temperature

59. 1 Joule is equal to

a.1.390 Cal

b.0.239 Cal

c.0.04184 Cal

d.2.39 Cal

60. Which of the following has dipole moment?

a.Both A and B

b.1-propene

c.cis-2-butene

d.trans-2-butene

61. In a spontaneous irreversible process, the total entropy of the system & its surroundings

a.is constant

b.is zero

c.increases

d.decreases

62. N-nitrosoamine when warmed with phenol and conc. sulphuric acid gives green colouration. The amine is

a.secondary amine

b.p-amine

c.tert. amine

d.quaternary salt

63. Which of the following is absorbed by HCl?

a.Ethanamine

b.Ethylene

c.Acetylene

d.Methyl alcohol

64. Equivalent weight of ammonia is

a.14/3

b.17

c.31

d.2.7

65. Ethyl alcohol on treatment with red P and HI under pressure gives

a.ethane

b.acetaldehyde

c.methane

d.ethyne

66. The rate of chemical reaction depends on the nature of chemical reactants because

a.some are coloured

b.energy of activation differs from one reaction to another

c.some are solid at room temperature

d.all the above

67. Wurtz reaction cannot be used for the preparation of

a.both methane and odd no. of C-atoms

b.methane

c.alkanes containing even no. of C-atoms

d.alkanes containing odd no. of C-atoms

68. Electrochemical equivalent is the mass of the element liberated during electrolysis when

a.3 amp current is passed

b.1 coulomb electricity is passed

c.1 amp. current for 1 hrs is passed

d.2 faraday electricity is passed

69. In which of the following octet rule is not applicable?

a.Transition elements

b.Alkaline earth metal

c.Alkali earth metal

d.p-block

70. On increasing the temperature by 10 K in the case of slow reactions

a.value of rate constant increases

b.number of collisions get doubled

c.activation energy increases

d.energy of activation decreases

71. An electrochemical cell can be changed into an electrolytic cell by

a.changing the electrolytes in two half cells

b.changing the conc. of the electrolytes

c.reversing the electrodes

d.providing higher potential from outside

72. In neopentane the number of primary carbon atoms are

a.5

b.1

c.4

d.2

73. Acid present in the lemon is

a.acrylic acid

b.citric acid

c.tartaric acid

d.lactic acid

74. In substitution reactions of tertiary halide, the ionisation of halogen atom as negative ion is facilitated by

a.free radical

b.electron repelling group

c.electron attracting group

d.All the above

75. Heisenberg test can be used to distinguish between

a.primary amines and tertiary amines

b.primary amines, secondary amines and tertiary amine

c.All the above

d.primary amines and secondary amines

76. Which of the following will have maximum entropy?

a.Diamond

b.Silver

c.Helium

d.Argon

77. The element with maximum number of electrons in the valence shell has atomic number

a.15

b.3

c.2

d.9

78. Ammonium acetate on heating decomposes to give

a.amine

b.acetamide

c.formamide

d.acetylamine

79. Which of the following is a carcinogen?

a.Benzenediazonium chloride

b.Ethyl amine

c.Aniline

d.N-nitroso amine

80. Which of the following will give an aldehyde on oxidation?

a.Methoxy ethane

b.2 methanal

c.1 propanal

d.2 methyl propane

81. Cobalt present along with iron in the synthesis of ammonia acts as

a.autocatalyst

b.inhibitor

c.promoter

d.induced catalyst

82. Mesitylene is

a.1, 3, 4 trimethyl benzene

b.2, 3, 5 trimethyl benzene

c.1, 3, 5 trimethyl benzene

d.2, 2, 4 trimethyl benzene

83. Between two elements A and B, the electronegativity difference is 2.0. The per cent ionic character of AB is

a.46

b.15

c.86

d.35

84. Amongst HX, the maximum dipole moment is of

a.HBr

b.HCl

c.HF

d.HI

85. Half-life period of a zero order reaction is

a.directly proportional to the initial conc.

b.inversely proportional to the conc.

c.independent of the conc.

d.directly proportional to cube of the conc.

86. The number of electrons that are shared between two atoms having a triple bond are

a.7

b.3

c.6

d.5

87. Which of the following acids is manufactured using sawdust?

a.Citric acid

b.Acetic acid

c.Butyric acid

d.Oxalic acid

88. Which of the following can reduce Tollens reagent but no Fehlings soln.?

a.Acetaldehyde

b.Formaldehyde

c.Benzaldehyde

d.Acetone

89. On mixing 1 mole of ethyl alcohol with 1 mole of acetic acid at 298 K the equilibrium concentration of ester and water becomes 2/3 moles each. If 3 moles of alcohol is mixed with 1 mole of acid, the concentration of ester in moles at equilibrium will be

a.2.2

b.0.09

c.0.9

d.1.1

90. Which of the following carbonium ions is the most stable?

a.diphenyl methyl

b.triphenyl methyl

c.benzyl

d.All the above

91. Carbinol is

a.ethyl alcohol

b.1-butanol

c.2-propanol

d.methyl alcohol

92. Reaction between silver nitrate and sodium chloride goes to completion because

a.the reaction is instantaneous

b.silver nitrate is insoluble in water

c.solubility of silver nitrate increases with sodium chloride

d.silver chloride is sparingly soluble in water

93. Art of electroplating was enunciated by

a.Einstein

b.Ampere

c.Brugantally

d.Kohlorausch

94. Radio-activity was discovered by

a.Madame Curie

b.Rutherford

c.J.J. Thomson

d.Henry Becquerel

95. Among the alkanes with an increase in mol wt…….

a.density decreases

b.b.pt increases

c.m.pt. decreases

d.f.pt. decreases

96. Which of the following shows positive deviation from Raoults law?

a.Acetone and ethyl alcohol

b.Benzene and toluene

c.Acetone and chloroform

d.Ethyl alcohol and cyclohexane

97. Shape of the carboxyl group is

a.planar triangular

b.tetrahedral

c.octahedral

d.pyramidal

98. Nobels oil is

a.glycerol trinitrate

b.glycerol

c.dinitro glycerine

d.trinitroglycol

99. RCOCl reacts with R MgBr to yield

a.ketone

b.secondary alcohol

c.tertiary alcohol

d.primary alcohol

100. A mixture of 1-chloropropane and 2-chloropropane is treated with alcoholic KOH. The resulting mixture will have

a.2-propene

b.1-propene

c.1-propanol

d.a mixture of 1-propene and 2-propene

CUET 2026 Chemistry MCQ Question Answers – 100 MCQs for Practice

Chemistry MCQ Question Answers for CUET 2026

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