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Haloalkanes and Haloarenes · Question 9

JEE Main 2026 (Online) 24th January Morning ShiftMCQEasy📈 Topic in 3% papers+4−1
1

Given below are two statements : In the light of the above statements, choose the correct answer from the options given below

  1. Statement I is false but Statement II is true
  2. Statement I is true but Statement II is false
  3. Both Statement I and Statement II are true
  4. Both Statement I and Statement II are false

Answer

(2) Statement I is true but Statement II is false

Solution

Statement I: In vinyl chloride the lone pair of Cl is in resonance with the C=C bond:

CH2=CH- Cl: CH2-CH= Cl

the C–Cl bond gets partial double bond character. Also the carbon is sp2 hybridised (more s-character, more electronegative) and holds Cl more tightly than the sp3 carbon of CH3-CH2-Cl.

C–Cl bond is shorter and stronger in CH2=CH-Cl. Statement I is true.

Statement II: The given compound (2-chloro-2-phenylbutane) is a tertiary benzylic halide. It is hydrolysed by the SN1 mechanism through a planar, resonance-stabilised benzylic carbocation C6H5 C(CH3)C2H5.

Water attacks the planar carbocation equally from both faces, giving equal amounts of the two enantiomers of 2-phenylbutan-2-ol (racemisation).

The racemic mixture formed is optically inactive and does not rotate plane polarised light. Statement II is false.

Answer: (2)

JEE Main 2026 (Online) 24th January Morning Shift

Keep practising — Haloalkanes and Haloarenes

2

Match the List-I with List-II Choose the correct answer from the options given below :

  1. A-III, B-IV, C-I, D-II
  2. A-IV, B-I, C-III, D-II
  3. A-III, B-IV, C-II, D-I
  4. A-I, B-II, C-IV, D-III
JEE Main 2026 (Online) 24th January Morning Shift
3

As compared with chlorocyclohexane, which of the following statements correctly apply to chlorobenzene? Choose the correct answer from the options given below :

  1. B, C and E Only
  2. A, C and E Only
  3. B, C and D Only
  4. A, D and E Only
JEE Main 2026 (Online) 22nd January Morning Shift
4

The correct order of the rate of reaction of the following reactants with nucleophile by SN1 mechanism is : (Given : Structures I and II are rigid) [figure]

  1. I < II < III < IV
  2. II < I < III < IV
  3. III < I < II < IV
  4. IV < III < II < I
JEE Main 2026 (Online) 22nd January Morning Shift
5

The correct order of reactivity of CH3Br in methanol with the following nucleophiles is F-, I-, C2H5O- and C6H5O-

  1. I- > C2H5O- > C6H5O- > F-
  2. I- > F- > C6H5O- > C2H5O-
  3. I- > C6H5O- > F- > C2H5O-
  4. I- > C2H5O- > F- > C6H5O-
JEE Main 2026 (Online) 22nd January Morning Shift
6

The correct order of the rate of the reaction for the following reaction with respect to nucleophiles is : CH3Br + Nu- CH3Nu + Br-

  1. ClO4- > CH3COO- > OH- > PhO-
  2. OH- > PhO- > CH3COO- > ClO4-
  3. CH3COO- > PhO- > OH- > ClO4-
  4. PhO- > OH- > CH3COO- > ClO4-
JEE Main 2026 (Online) 21st January Evening Shift
7

The correct order of reactivity of the following benzyl halides towards reaction with KCN is : [figure]

  1. a > b > c > d
  2. b > a > d > c
  3. b > a > c > d
  4. a > b > d > c
JEE Main 2026 (Online) 21st January Evening Shift
8

The reactions which cannot be applied to prepare an alkene by elimination, are Choose the correct answer from the options given below:

  1. B & E Only
  2. B, C & D Only
  3. A, C & D Only
  4. B & D Only
JEE Main 2025 (Online) 7th April Morning Shift
9

Match List - I with List - II. Choose the correct answer from the options given below :

  1. A-II, B-III, C-I, D-IV
  2. A-III, B-IV, C-II, D-I
  3. A-IV, B-III, C-I, D-II
  4. A-IV, B-III, C-II, D-I
JEE Main 2025 (Online) 7th April Evening Shift
10

Given below are two statements : In the light of the above statements, choose the most appropriate answer from the options given below :

  1. Both Statement I and Statement II are incorrect
  2. Both Statement I and Statement II are correct
  3. Statement I is incorrect but Statement II is correct
  4. Statement I is correct but Statement II is incorrect
JEE Main 2025 (Online) 4th April Evening Shift
11

In the following series of reactions identify the major products A & B respectively : [figure]

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
JEE Main 2025 (Online) 3rd April Evening Shift

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All JEE Main Chemistry chapters
Physical ChemistrySome Basic Concepts of ChemistryStructure of AtomStates of MatterThermodynamicsEquilibriumRedox ReactionsSolutionsElectrochemistryChemical Kinetics
Inorganic ChemistryClassification of Elements and Periodicity in PropertiesChemical Bonding and Molecular Structurep-Block Elements (Group 13 & 14)p-Block Elements (Group 15–18)d- and f-Block ElementsCoordination Compounds
Organic ChemistryOrganic Chemistry – Some Basic Principles and TechniquesIsomerismHydrocarbonsHaloalkanes and HaloarenesAlcohols, Phenols and EthersAldehydes, Ketones and Carboxylic AcidsAminesBiomoleculesPrinciples Related to Practical Chemistry