CUET 2024 Chemistry MCQs 100 Questions for CUET Exam

Chemistry MCQ Question Answers for CUET 2024

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 2024 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.

1. Art of electroplating was enunciated by

a.Kohlorausch

b.Ampere

c.Brugantally

d.Einstein

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

a.36

b.5

c.27

d.9

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

a.16

b.6

c.24

d.5

4. Heisenberg test can be used to distinguish between

a.primary amines and secondary amines

b.primary amines, secondary amines and tertiary amine

c.All the above

d.primary amines and tertiary amines

5. An azeotrope is one that

a.cannot be separated by distillation

b.can be separated by distillation at critical solution temperature

c.can be separated by distillation above critical solution temperature

d.can be separated by distillation below critical solution temperature

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

a.p-block

b.Alkaline earth metal

c.Transition elements

d.Alkali earth metal

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

a.silver nitrate is insoluble in water

b.the reaction is instantaneous

c.solubility of silver nitrate increases with sodium chloride

d.silver chloride is sparingly soluble in water

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

a.ethyl acetate

b.methyl methanoate

c.formic acid

d.propyl methanoate

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

a.Butyric acid

b.Acetic acid

c.Oxalic acid

d.Citric acid

10. Equivalent weight of ammonia is

a.17

b.14/3

c.31

d.2.7

11. 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.1-propene

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

12. Schiffs base on reduction give

a.p-amine

b.aniline

c.sec. amine

d.tert. amine

13. Which of the following is a carcinogen?

a.Aniline

b.Ethyl amine

c.N-nitroso amine

d.Benzenediazonium chloride

14. Which of the following has dipole moment?

a.Both A and B

b.cis-2-butene

c.trans-2-butene

d.1-propene

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

a.free radical

b.electron attracting group

c.electron repelling group

d.All the above

16. Hydrogen bomb is based on the phenomenon of

a.Chemical reaction

b.Nuclear fusion

c.Nuclear explosion

d.Nuclear fission

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

a.promoter

b.induced catalyst

c.inhibitor

d.autocatalyst

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

a.directly proportional to the initial conc.

b.directly proportional to cube of the conc.

c.independent of the conc.

d.inversely proportional to the conc.

19. The hydrogen halide which has maximum boiling point is

a.HBr

b.HF

c.HI

d.HCl

20. A mole of electrons is the same as

a.curie

b.one

c.faraday

d.ampere-second

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

a.is not affected

b.increase considerably

c.decreases

d.increases only if the products are gaseous

22. Acid present in the lemon is

a.lactic acid

b.acrylic acid

c.citric acid

d.tartaric acid

23. Once the equilibrium is reached under given condition:

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

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

c.Conc. of products remains same

d.Conc. of reactants remains same

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

a.5 gm mole

b.3 mole

c.1 gm equivalent

d.1 mole gm atom

25. Calcium acetate on heating gives

a.acetic anhydride

b.ethane

c.pentane

d.acetone

26. Ammonium acetate on heating decomposes to give

a.acetamide

b.amine

c.formamide

d.acetylamine

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

a.m.pt. decreases

b.density decreases

c.b.pt increases

d.f.pt. decreases

28. In the case of o-chlorophenol there exist

a.intermolecular covalent bonding

b.intramolecular hydrogen bonding

c.no hydrogen bonding

d.both inter and intramolecular hydrogen bonding

29. Radio-activity was discovered by

a.Rutherford

b.J.J. Thomson

c.Madame Curie

d.Henry Becquerel

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

a.4

b.2

c.0

d.1

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

a.Calorimeter

b.Voltmeter

c.Thermometer

d.Ammeter

32. 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/gm

b.-21.12 Kcal/mol

c.500 cal/mol

d.-44.2 Kcal/mol

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

a.chloride

b.none of these

c.sodium

d.hydroxide

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

a.90 degree

b.96 degree

c.144 degree

d.180 degree

35. Calcium formate of heating gives

a.formic acid

b.methanoic anhydride

c.banzaldehyde

d.formaldehyde

36. Shape of amines is

a.planar triangular

b.square planar

c.tetrahedral

d.pyramidal

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

a.8.9 m

b.9.8 m

c.14 m

d.7.9 m

38. Formic acid is prepared by distilling glycerol with

a.tartaric acid at 10 degree Centigrade

b.lactic acid at 50 degree Centigrade

c.oxalic acid at 110 degree Centigrade

d.oxalic acid at 240 degree Centigrade

39. Wurtz reaction cannot be used for the preparation of

a.methane

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

c.alkanes containing odd no. of C-atoms

d.alkanes containing even no. of C-atoms

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

a.1 propanal

b.2 methanal

c.Methoxy ethane

d.2 methyl propane

41. Shape of the carboxyl group is

a.planar triangular

b.tetrahedral

c.pyramidal

d.octahedral

42. An electrophile is a/an

a.Lewis acid

b.Lewis base

c.Both A and B

d.electron deficient species

43. Equilibrium constant changes with

a.time

b.both temperature and concentration

c.pressure

d.temperature

44. In neopentane the number of primary carbon atoms are

a.2

b.5

c.1

d.4

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

a.methane

b.ethane

c.ethyne

d.acetaldehyde

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

a.105 min

b.125 min

c.50 min

d.70 min

47. Salt Bridge is used because it

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

b.maintains the electrical neutrality of the two half cells

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

d.provides the extra ions

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

a.Acetone and chloroform

b.Benzene and toluene

c.Ethyl alcohol and cyclohexane

d.Acetone and ethyl alcohol

49. 1 Joule is equal to

a.2.39 Cal

b.1.390 Cal

c.0.04184 Cal

d.0.239 Cal

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

a.5

b.6

c.3

d.7

51. 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.1.1

b.0.09

c.0.9

d.2.2

52. Amongst HX, the maximum dipole moment is of

a.HI

b.HBr

c.HF

d.HCl

53. 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.75 days

b.25 days

c.100 days

d.50 days

54. 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.224

d.728

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

a.Phosphorus

b.Iodine

c.Oxygen

d.Nitrogen

56. Which of the following is absorbed by HCl?

a.Methyl alcohol

b.Acetylene

c.Ethanamine

d.Ethylene

57. Propene on treatment with dil. sulphuric acid gives

a.None of above

b.A and B

c.1-propanol

d.2-propanol

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

a.Acetaldehyde

b.Formaldehyde

c.Acetone

d.Benzaldehyde

59. Schiffs bax is obtaind by the action of

a.p-amines with acid anhydrides

b.p-amines with aldehydes

c.p-amines with acid chloride

d.All the above

60. The bond angle in ammonia is

a.106 degree

b.99 degree

c.110 degree

d.107 degree

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

a.some are solid at room temperature

b.all the above

c.energy of activation differs from one reaction to another

d.some are coloured

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

a.diazo compound

b.nitro compound

c.azo compound

d.benzene

63. 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

64. 75% of a radioactive element disintegrates in 6 days. Its half-life is

a.2 days

b.6 days

c.3 days

d.18 days

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

a.providing higher potential from outside

b.reversing the electrodes

c.changing the conc. of the electrolytes

d.changing the electrolytes in two half cells

66. 100 gram of caustic soda is dissolved in 1 kg of water, the molality of the solution is

a.2

b.3.3

c.2.5

d.25

67. Which of the following has minimum boiling point?

a.neopentane

b.isopentane

c.n-pentane

d.both A and B

68. 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.nuclear charge lower by one unit

c.nuclear charge higher by one unit

d.same nuclear charge

69. Nobels oil is

a.glycerol trinitrate

b.glycerol

c.dinitro glycerine

d.trinitroglycol

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

a.hydrogen bond

b.ionic bond

c.Van der Waals interaction

d.polar covalent bond

71. Which of the following is a sedative?

a.Paraformaldehyde

b.Benzaldehyde

c.Paraldehyde

d.Metaldehyde

72. Mesitylene is

a.2, 3, 5 trimethyl benzene

b.1, 3, 4 trimethyl benzene

c.1, 3, 5 trimethyl benzene

d.2, 2, 4 trimethyl benzene

73. Which will have the maximum solubility in water?

a.Isobutyl alcohol

b.Methanol

c.1 butanol

d.Tert. butyl alcohol

74. Vinegar contains

a.7 to 8% acetic acid

b.100% acetic acid

c.10 to 12% acetic acid

d.19% acetic acid

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

a.goes on increasing

b.remains constant

c.may increase or decrease

d.decreases

76. All the radioactive changes are of

a.Zero order

b.Second order

c.First order

d.Third order

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

a.2 faraday electricity is passed

b.3 amp current is passed

c.1 coulomb electricity is passed

d.1 amp. current for 1 hrs is passed

78. The maximum number of molecules are in:

a.48 gram of ethyl alcohol

b.52 gram of nitrogen peroxide

c.36 gram of water

d.14 gram of carbon dioxide

79. Which of the following will have maximum entropy?

a.Helium

b.Diamond

c.Argon

d.Silver

80. Bromination of isobutene gives as major product

a.n-butyl bromide

b.tert. butyl bromide

c.isobutyl bromide

d.None of the above

81. The chemical system in equilibrium is not affected by

a.change in the concentration of products

b.increase in the concentration of reactants

c.addition of a catalyst

d.changing the temperature

82. Carbinol is

a.methyl alcohol

b.2-propanol

c.1-butanol

d.ethyl alcohol

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

a.diphenyl methyl

b.benzyl

c.All the above

d.triphenyl methyl

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

a.Adiabatic

b.none of the above

c.Isothermal

d.Isobaric

85. RCOCl reacts with R MgBr to yield

a.primary alcohol

b.tertiary alcohol

c.ketone

d.secondary alcohol

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

a.1% aqueous solution of methyl alcohol

b.1% aqueous solution of sodium chloride

c.1% aqueous solution of fructose

d.1% aqueous solution of urea

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

a.3

b.15

c.2

d.9

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

a.as radioactive as the radium content

b.thrice as radioactive as the radium content

c.half as radioactive as the radium content

d.no longer radioactive

89. Aniline condenses with benzaldehyde to give

a.benzoyl aniline

b.N benzal aniline

c.benzal aniline

d.N benzoyl aniline

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

a.alcohols have hydrogen bond

b.alcohols have ionic bond

c.alcohols are miscible with water

d.alcohols contains –OH group

91. Acetic acid exists as dimer in benzene due to

a.condensation reaction

b.presence of hydrogen atom at α-carbon

c.presence of carbonyl group

d.hydrogen bonding

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

a.activation energy increases

b.energy of activation decreases

c.number of collisions get doubled

d.value of rate constant increases

93. Williamsons synthesis is used for preparing

a.ether

b.ester

c.amines

d.alcohol

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

a.decreases

b.is zero

c.increases

d.is constant

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

a.electron

b.meson

c.positron

d.neutron

96. In the case of exothermic reactions equilibrium constant K

a.increases with pressure

b.remains unchanged with temperature

c.depends on the nature

d.decreases with temperature

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

a.M energy level

b.N energy level

c.L energy level

d.K energy level

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

a.p-amine

b.tert. amine

c.quaternary salt

d.secondary amine

99. In isopentane the number of secondary carbon atom is

a.2

b.3

c.0

d.1

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

a.Radium-silicon method

b.Uranium lead method

c.Carbon 14 dating method

d.Potassium-Argon method

CUET 2024 Chemistry MCQ Question Answers – 100 MCQs for Practice

Chemistry MCQ Question Answers for CUET 2024

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