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JEE Main 202228 JulyEvening Shift
Exam
JEE Main
Year
2022
Date
28 July
Shift
Evening Shift
Subject
Chemistry
Chapter
Hydrocarbons

JEE Main 2022 · 28 July · Evening Shift · Chemistry · Hydrocarbons

Arrange the following in increasing order of reactivity towards...

Arrange the following in increasing order of reactivity towards nitration

A. pp-xylene

B. bromobenzene

C. mesitylene

D. nitrobenzene

E. benzene

Choose the correct answer from the options given below

Arrange the following in increasing order of reactivity towards nitration A. p -xylene B. bromobenzene C. mesitylene D.

Options

  1. AC<D<E<A<BC < D < E < A < B
  2. BD<B<E<A<CD < B < E < A < C
  3. CD<C<E<A<BD < C < E < A < B
  4. DC<D<E<B<AC < D < E < B < A

Correct answer

B. D<B<E<A<CD < B < E < A < C

Step-by-step solution

Nitration is an electrophilic aromatic substitution reaction. The +M+ M effect increases the rate of nitration whereas the −M- M effect decreases the rate of nitration.

−NO2(−M),−Br(+Mbutdominant−I)and−CH3(+H)- {NO}_{2} ( - M ) , - Br ( + Mbutdominant - I ) and - {CH}_{3} ( + H )

Arrange the following in increasing order of reactivity towards nitration A. p -xylene B. bromobenzene C. mesitylene D.

−NO2- {NO}_{2} is strongly deactivating

−Br,- Br, deactivating

−CH3,- {CH}_{3}, activating group

D<B<E<A<CD < B < E < A < C

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