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JEE Main 202310 AprilMorning Shift
Exam
JEE Main
Year
2023
Date
10 April
Shift
Morning Shift
Subject
Chemistry
Chapter
Haloalkanes and Haloarenes

JEE Main 2023 · 10 April · Morning Shift · Chemistry · Haloalkanes and Haloarenes

Identify the correct order of reactivity for the following pairs...

Identify the correct order of reactivity for the following pairs towards the respective mechanism

(A) Identify the correct order of reactivity for the following pairs towards the respective mechanism (A) (B) (C)

(B) Identify the correct order of reactivity for the following pairs towards the respective mechanism (A) (B) (C)

(C) Electrophilic substitution

Identify the correct order of reactivity for the following pairs towards the respective mechanism (A) (B) (C)

(D) Nucleophilic substitution

Identify the correct order of reactivity for the following pairs towards the respective mechanism (A) (B) (C)

Choose the correction answer from the options given below:

Options

  1. A

    (B),\left(B\right),\left(C\right)and(D)and \left(D\right) only

  2. B

    (A),(B),\left(A\right), \left(B\right),\left(C\right)and(D)and \left(D\right)

  3. C

    (A),\left(A\right),\left(B\right)and(D)and \left(D\right) only

  4. D

    (A),\left(A\right),\left(C\right)and(D)and \left(D\right)only

Correct answer

B.

(A),(B),\left(A\right), \left(B\right),\left(C\right)and(D)and \left(D\right)

Step-by-step solution

The rate of SN2{S}_{N}2 reaction decreases with increase in steric crowding. In the given set of molecules the second molecule(Tertiary alkyl halide) is sterically crowded, hence, it is correct option. More stable carbocation formed, higher will be the reactivity of SN1{S}_{N}1. Benzyl carbocation is more reactive than aliphatic carbocation.

The deactivating groups decreases the rate of electrophilic substitution reaction. NO2{NO}_{2} is strong deactivating group for electrophilic substitution.

In the aromatic nucleophilic substitution reactions, the intermediate formed is carbanion and, it is stabilised by NO2{NO}_{2} at ortho or para positions.

Hence A,B,C,DA, B, C, D all are correct.

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