JEE Main 2022 · ChemistryMultiple choiceDiagram basedMediumMulti-step

JEE Main 27 June 2022, Shift 2, Chemistry Q74

Question 74 of 90 in this shift, Chemistry question 14 of 30, Section A.

Product 'A' of following sequence of reactions is Ethylbenzene

\xrightarrow[\text{(b) Cl}_2\text{, }\Delta]{\text{(a) Br}_2\text{, Fe}}

'A' (c) alc. KOH Major Product

The figure, in words

Reaction scheme with Ethylbenzene as reactant; four options are drawn benzene-ring structures as listed.

(1)[figure: benzene ring with a substituent drawn as Cl above C= $\mathrm{CH_2}$ (Cl on the carbon attached to the ring)]
(2)[figure: benzene ring with a substituent drawn as Br above C= $\mathrm{CH_2}$ (Br on the carbon attached to the ring)]
(3)[figure: benzene ring with Br at the bottom and, at the top, a substituent drawn as Cl above a triple bond]
(4)[figure: benzene ring with Br at the bottom and $\mathrm{CH=CH_2}$ at the top]Official answer

Official answer

Option 4

NTA final key.

Chapter: Haloalkanes and Haloarenes
Topic: Aromatic Hydrocarbons
Idea tested: Role of Lewis Acids in Halogenation

Same topic in other shifts

All Aromatic Hydrocarbons questions

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. This question needs a figure we do not reproduce; it is described in words above. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.