Unit 10: Haloalkanes and Haloarenes

I. Multiple Choice Questions (Type-I)

1. Reactivity Order of Alcohols with Halogen Acids

   • Options: (A) CH₃CH₂CH₂OH, (B), (C)
   • Correct Order: (C) > (B) > (A)

2. Yielding Alkyl Chloride with HCl

   • Which alcohols react with concentrated HCl?

3. Identify Compound Y

   • Choose the correct compound from options.

4. Toluene Reaction with Halogen

   • Reaction type: Electrophilic substitution reaction

5. Halogen Exchange Reaction

   • Example: R-X + NaI → R-I + NaX

6. Reagent for Specific Reaction

   • Options include Cl₂/UV light, NaCl + H₂SO₄, etc.

7. Density Order of Compounds

8. Boiling Points Order

   • Example: CH₃CH₂CH₂CH₂Br

9. Asymmetric Carbon Atom

   • Identify asymmetric carbon in given molecules.

10. Enantiomeric Structures

11. Example of Vic-dihalide

• Example: 1,2-dichloroethane

12. Position of Br in Compound

13. Chlorobenzene Formation

• Species that attacks benzene: Cl⁺

14. Classification of Ethylidene Chloride

15. SN1 Reaction Preference

• Primary alkyl halides prefer SN2.

16. Alkyl Halides Reactivity

17. Correct IUPAC Name

18. IUPAC Name for Diethylbromomethane

19. Toluene Reaction with Chlorine

20. Chloromethane Reaction with Ammonia

21. Chirality in Molecules

22. Reaction Mechanism of C₆H₅CH₂Br with NaOH

23. Asymmetric Carbon Atoms in Molecules

24. Racemic Mixture Formation

25. Rate of Reaction in Nucleophilic Substitution

26. Correct Boiling Point Order

• Example: 1-Iodobutane, 1-Bromobutane, etc.

27. Boiling Points of Bromo Compounds

II. Multiple Choice Questions (Type-II)

• Questions where more than one option may be correct.

III. Short Answer Type

44. Preparation of Aryl Iodides

    • Requires oxidizing agent due to reversibility.

45. Melting Points Comparison

    • p-Dibromobenzene has higher melting point due to symmetry.

46. SN1 Reaction Rate

47. Antiseptic Property of Iodoform

    • Due to liberation of free iodine.

48. Reactivity of Haloarenes

49. Role of Lewis Acids in Aryl Bromides and Chlorides

50. Reactivity with NaBr and H₂SO₄

51. Major Product in Reaction with HI

    • Markovnikov's rule applies.

52. Solubility of Haloalkanes

53. Resonance Structures and Directing Groups

54. Classification of Halides

    • Primary, Secondary, Tertiary

55. Structural Formula and Reaction Rate

56. Reactions with Cl₂ and FeCl₃

57. Identification of Reaction Products

58. Melting Point Comparison

59. Structure and Name of Neo-pentylbromide

60. Structure of Hydrocarbon

61. Alkene Reaction Yielding Specific Product

62. Reactivity with Aqueous KOH

63. Preparation of Aryl Halides

64. SN1 Reaction Rate Comparison

65. Reactivity of Allyl Chloride

66. Use of Grignard Reagent

67. Role of Polar Solvents in SN1 Mechanism

68. Test for Presence of Double Bond

69. Environmental Threat of Diphenyls

70. IUPAC Names of Banned Insecticides

71. Elimination vs. Nucleophilic Substitution

72. Preparation of Monobromobenzene

73. Reactivity of Aryl Halides

74. Reaction Mechanisms of Alkyl Halides

75. Addition of HCl to Isobutylene

76. Nature of CX Bond in Haloarenes

77. Obtaining Iodoethane from Ethanol

78. Nucleophilicity of Cyanide Ion

IV. Matching Type

79. Matching Drugs with Effects

80. Matching Reactions with Types

81. Matching Structures with Compound Classes

82. Matching Reactions with Types of Reactions

83. Matching Structures with Names

84. Matching Reactions with Names

V. Assertion and Reason Type

• Questions involving assertion and reasoning to explain chemical phenomena.

VI. Long Answer Type

95. Substitution vs. Elimination in Alkylhalides

96. Environmental Impact of Halogen Compounds

97. Reactivity of Aryl Halides