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Haloalkanes and Haloarenes · Question 7

JEE Main 2026 (Online) 28th January Evening ShiftMCQMedium📈 Topic in 3% papers+4−1
1

Which of the following reactions is NOT correctly represented?

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]

Answer

(1) [figure]

Solution

(1) The ring is 3-methylcyclohexene: the CH3 is on the ring carbon next to the C=C. With Br2/h , free-radical substitution occurs at the allylic position; the tertiary H on the ring carbon carrying CH3 is both tertiary and allylic, so Br enters the ring (allylic) carbon, not the primary CH3 group. The product shown is not correct.

(2) Sandmeyer reaction: C6H5N2+Cl- Cu2Br2/HBr C6H5Br + N2 correct.

(3) Toluene with Br2/h : side-chain (benzylic) free-radical substitution gives benzyl bromide correct.

(4) Toluene with Br2/Fe in the dark: electrophilic ring substitution; -CH3 is o/p-directing o- and p-bromotoluenes correct.

Answer: (1)

JEE Main 2026 (Online) 28th January Evening Shift

Keep practising — Haloalkanes and Haloarenes

2

Identify the correct statements : The presence of -NO2 group in benzene ring Choose the correct answer from the options given below :

  1. A and D Only
  2. B and D Only
  3. C and A Only
  4. B and C Only
JEE Main 2026 (Online) 28th January Evening Shift
3

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
JEE Main 2026 (Online) 24th January Morning Shift
4

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
5

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
6

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
7

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
8

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
9

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
10

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
11

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

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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