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

a.Formaldehyde

b.Acetaldehyde

c.Acetone

d.Benzaldehyde

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

a.induced catalyst

b.promoter

c.inhibitor

d.autocatalyst

3. Heisenberg test can be used to distinguish between

a.primary amines, secondary amines and tertiary amine

b.primary amines and tertiary amines

c.primary amines and secondary amines

d.All the above

4. Acetic acid exists as dimer in benzene due to

a.presence of hydrogen atom at α-carbon

b.condensation reaction

c.hydrogen bonding

d.presence of carbonyl group

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

a.2-propene

b.1-propanol

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

d.1-propene

6. Which of the following is absorbed by HCl?

a.Ethanamine

b.Ethylene

c.Acetylene

d.Methyl alcohol

7. In the case of o-chlorophenol there exist

a.no hydrogen bonding

b.intramolecular hydrogen bonding

c.intermolecular covalent bonding

d.both inter and intramolecular hydrogen bonding

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

a.may increase or decrease

b.decreases

c.goes on increasing

d.remains constant

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

a.meson

b.positron

c.neutron

d.electron

10. An azeotrope is one that

a.cannot be separated by distillation

b.can be separated by distillation above critical solution temperature

c.can be separated by distillation below critical solution temperature

d.can be separated by distillation at critical solution temperature

11. Aniline condenses with benzaldehyde to give

a.benzoyl aniline

b.N benzal aniline

c.N benzoyl aniline

d.benzal aniline

12. In the case of exothermic reactions equilibrium constant K

a.depends on the nature

b.increases with pressure

c.decreases with temperature

d.remains unchanged with temperature

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

a.9

b.36

c.5

d.27

14. Radio-activity was discovered by

a.Madame Curie

b.Rutherford

c.J.J. Thomson

d.Henry Becquerel

15. The bond angle in ammonia is

a.110 degree

b.107 degree

c.99 degree

d.106 degree

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

a.1 mole gm atom

b.3 mole

c.1 gm equivalent

d.5 gm mole

17. Equivalent weight of ammonia is

a.31

b.14/3

c.2.7

d.17

18. The hydrogen halide which has maximum boiling point is

a.HBr

b.HI

c.HF

d.HCl

19. Once the equilibrium is reached under given condition:

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

b.Conc. of reactants remains same

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

d.Conc. of products remains same

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

a.secondary amine

b.quaternary salt

c.p-amine

d.tert. amine

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

a.increase considerably

b.is not affected

c.decreases

d.increases only if the products are gaseous

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

a.3 amp current is passed

b.1 amp. current for 1 hrs is passed

c.1 coulomb electricity is passed

d.2 faraday electricity is passed

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

a.ethane

b.ethyne

c.methane

d.acetaldehyde

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

a.solubility of silver nitrate increases with sodium chloride

b.silver nitrate is insoluble in water

c.the reaction is instantaneous

d.silver chloride is sparingly soluble in water

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

a.5

b.7

c.3

d.6

26. 100 gram of caustic soda is dissolved in 1 kg of water, the molality of the solution is

a.3.3

b.2.5

c.2

d.25

27. 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.0.09

b.0.9

c.1.1

d.2.2

28. Which of the following is a sedative?

a.Paraldehyde

b.Metaldehyde

c.Benzaldehyde

d.Paraformaldehyde

29. All the radioactive changes are of

a.Third order

b.First order

c.Zero order

d.Second order

30. Ammonium acetate on heating decomposes to give

a.amine

b.acetamide

c.acetylamine

d.formamide

31. Calcium acetate on heating gives

a.pentane

b.acetic anhydride

c.ethane

d.acetone

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

a.2 methyl propane

b.Methoxy ethane

c.2 methanal

d.1 propanal

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

a.15

b.9

c.3

d.2

34. 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.448

c.728

d.224

35. Nobels oil is

a.trinitroglycol

b.dinitro glycerine

c.glycerol trinitrate

d.glycerol

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

a.1% aqueous solution of urea

b.1% aqueous solution of methyl alcohol

c.1% aqueous solution of sodium chloride

d.1% aqueous solution of fructose

37. Equilibrium constant changes with

a.time

b.pressure

c.both temperature and concentration

d.temperature

38. The maximum number of molecules are in:

a.14 gram of carbon dioxide

b.36 gram of water

c.48 gram of ethyl alcohol

d.52 gram of nitrogen peroxide

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

a.is zero

b.is constant

c.increases

d.decreases

40. In neopentane the number of primary carbon atoms are

a.2

b.1

c.5

d.4

41. Propene on treatment with dil. sulphuric acid gives

a.None of above

b.2-propanol

c.1-propanol

d.A and B

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

a.Isothermal

b.none of the above

c.Isobaric

d.Adiabatic

43. Schiffs base on reduction give

a.sec. amine

b.tert. amine

c.aniline

d.p-amine

44. 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.105 min

d.70 min

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

a.35

b.86

c.15

d.46

46. Which of the following has dipole moment?

a.trans-2-butene

b.cis-2-butene

c.1-propene

d.Both A and B

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

a.electron repelling group

b.electron attracting group

c.free radical

d.All the above

48. Formic acid is prepared by distilling glycerol with

a.oxalic acid at 240 degree Centigrade

b.oxalic acid at 110 degree Centigrade

c.lactic acid at 50 degree Centigrade

d.tartaric acid at 10 degree Centigrade

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

a.diazo compound

b.azo compound

c.benzene

d.nitro compound

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

a.Voltmeter

b.Calorimeter

c.Ammeter

d.Thermometer

51. Acid present in the lemon is

a.acrylic acid

b.citric acid

c.tartaric acid

d.lactic acid

52. Salt Bridge is used because it

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

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

c.provides the extra ions

d.maintains the electrical neutrality of the two half cells

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

a.sodium

b.chloride

c.none of these

d.hydroxide

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

a.formic acid

b.methyl methanoate

c.ethyl acetate

d.propyl methanoate

55. Bromination of isobutene gives as major product

a.None of the above

b.n-butyl bromide

c.isobutyl bromide

d.tert. butyl bromide

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

a.alcohols contains –OH group

b.alcohols have ionic bond

c.alcohols have hydrogen bond

d.alcohols are miscible with water

57. Shape of the carboxyl group is

a.pyramidal

b.tetrahedral

c.planar triangular

d.octahedral

58. Which of the following is a carcinogen?

a.N-nitroso amine

b.Benzenediazonium chloride

c.Aniline

d.Ethyl amine

59. 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

60. Williamsons synthesis is used for preparing

a.ether

b.amines

c.alcohol

d.ester

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

a.7.9 m

b.9.8 m

c.8.9 m

d.14 m

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

a.All the above

b.diphenyl methyl

c.benzyl

d.triphenyl methyl

63. Hydrogen bomb is based on the phenomenon of

a.Chemical reaction

b.Nuclear explosion

c.Nuclear fusion

d.Nuclear fission

64. Wurtz reaction cannot be used for the preparation of

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

b.alkanes containing even no. of C-atoms

c.methane

d.alkanes containing odd no. of C-atoms

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

a.M energy level

b.L energy level

c.N energy level

d.K energy level

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

a.half as radioactive as the radium content

b.as radioactive as the radium content

c.thrice as radioactive as the radium content

d.no longer radioactive

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

a.lower nuclear charge

b.same nuclear charge

c.nuclear charge higher by one unit

d.nuclear charge lower by one unit

68. 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.-21.12 Kcal/mol

b.500 cal/mol

c.500 cal/gm

d.-44.2 Kcal/mol

69. An electrophile is a/an

a.Lewis acid

b.electron deficient species

c.Lewis base

d.Both A and B

70. Mesitylene is

a.2, 2, 4 trimethyl benzene

b.1, 3, 5 trimethyl benzene

c.2, 3, 5 trimethyl benzene

d.1, 3, 4 trimethyl benzene

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

a.Phosphorus

b.Iodine

c.Oxygen

d.Nitrogen

72. Amongst HX, the maximum dipole moment is of

a.HF

b.HCl

c.HBr

d.HI

73. 1 Joule is equal to

a.0.04184 Cal

b.0.239 Cal

c.2.39 Cal

d.1.390 Cal

74. Art of electroplating was enunciated by

a.Ampere

b.Einstein

c.Brugantally

d.Kohlorausch

75. Calcium formate of heating gives

a.formaldehyde

b.banzaldehyde

c.methanoic anhydride

d.formic acid

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

a.Carbon 14 dating method

b.Radium-silicon method

c.Potassium-Argon method

d.Uranium lead method

77. In isopentane the number of secondary carbon atom is

a.3

b.0

c.1

d.2

78. Vinegar contains

a.100% acetic acid

b.10 to 12% acetic acid

c.19% acetic acid

d.7 to 8% acetic acid

79. Carbinol is

a.1-butanol

b.methyl alcohol

c.2-propanol

d.ethyl alcohol

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

a.Acetone and ethyl alcohol

b.Acetone and chloroform

c.Benzene and toluene

d.Ethyl alcohol and cyclohexane

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

a.activation energy increases

b.number of collisions get doubled

c.value of rate constant increases

d.energy of activation decreases

82. Which will have the maximum solubility in water?

a.Methanol

b.Tert. butyl alcohol

c.Isobutyl alcohol

d.1 butanol

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

a.Van der Waals interaction

b.polar covalent bond

c.ionic bond

d.hydrogen bond

84. The chemical system in equilibrium is not affected by

a.increase in the concentration of reactants

b.addition of a catalyst

c.change in the concentration of products

d.changing the temperature

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

a.p-block

b.Alkaline earth metal

c.Alkali earth metal

d.Transition elements

86. Shape of amines is

a.square planar

b.tetrahedral

c.planar triangular

d.pyramidal

87. A mole of electrons is the same as

a.curie

b.one

c.faraday

d.ampere-second

88. RCOCl reacts with R MgBr to yield

a.secondary alcohol

b.ketone

c.primary alcohol

d.tertiary alcohol

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

a.0

b.4

c.1

d.2

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

a.f.pt. decreases

b.density decreases

c.b.pt increases

d.m.pt. decreases

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

a.90 degree

b.96 degree

c.144 degree

d.180 degree

92. 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.50 days

b.100 days

c.25 days

d.75 days

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

a.Acetic acid

b.Citric acid

c.Butyric acid

d.Oxalic acid

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

a.some are coloured

b.some are solid at room temperature

c.all the above

d.energy of activation differs from one reaction to another

95. Which of the following will have maximum entropy?

a.Diamond

b.Argon

c.Helium

d.Silver

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

a.independent of the conc.

b.directly proportional to cube of the conc.

c.inversely proportional to the conc.

d.directly proportional to the initial conc.

97. Which of the following has minimum boiling point?

a.isopentane

b.both A and B

c.neopentane

d.n-pentane

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

a.reversing the electrodes

b.changing the conc. of the electrolytes

c.providing higher potential from outside

d.changing the electrolytes in two half cells

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

a.6

b.5

c.16

d.24

100. Schiffs bax is obtaind by the action of

a.p-amines with acid chloride

b.All the above

c.p-amines with aldehydes

d.p-amines with acid anhydrides

CUET 2026 Chemistry MCQ Question Answers – 100 MCQs for Practice

Chemistry MCQ Question Answers for CUET 2026

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