JEE Main 2026 — Haloalkanes and Haloarenes Question with Solution
JEE Main 2026 (04 April Shift 2)
Question
Match the LIST-I with LIST-II
Choose the correct answer from the options given below:
| List-I (Reaction) | List-II (Mechanism) |
|---|---|
| A. Williamson Synthesis | I. Electrophilic addition |
| B. Friedel Craft Reaction | II. Free radical substitution |
| C. Bromination of vinyl benzene | III. Nucleophilic substitution |
| D. Chlorination of toluene in light | IV. Electrophilic substitution |
Choose the correct answer from the options given below:
Choose an option
Show full solutionCorrect option: C
Correct answer
CA-III, B-IV, C-I, D-II
Step-by-step explanation
Williamson synthesis involves the reaction of an alkyl halide with a sodium alkoxide to form an ether, which proceeds via a nucleophilic substitution () mechanism. Thus, A matches with III.
Friedel-Crafts reaction involves the alkylation or acylation of an aromatic ring in the presence of a Lewis acid catalyst, which proceeds via an electrophilic substitution mechanism. Thus, B matches with IV.
Bromination of vinyl benzene (styrene) involves the addition of bromine across the carbon-carbon double bond, which proceeds via an electrophilic addition mechanism. Thus, C matches with I.
Chlorination of toluene in the presence of sunlight (or UV light) involves the substitution of hydrogen atoms in the methyl group by chlorine, which proceeds via a free radical substitution mechanism. Thus, D matches with II.
The correct matching is A-III, B-IV, C-I, D-II.
Answer: A-III, B-IV, C-I, D-II
Friedel-Crafts reaction involves the alkylation or acylation of an aromatic ring in the presence of a Lewis acid catalyst, which proceeds via an electrophilic substitution mechanism. Thus, B matches with IV.
Bromination of vinyl benzene (styrene) involves the addition of bromine across the carbon-carbon double bond, which proceeds via an electrophilic addition mechanism. Thus, C matches with I.
Chlorination of toluene in the presence of sunlight (or UV light) involves the substitution of hydrogen atoms in the methyl group by chlorine, which proceeds via a free radical substitution mechanism. Thus, D matches with II.
The correct matching is A-III, B-IV, C-I, D-II.
Answer: A-III, B-IV, C-I, D-II
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This is a previous-year question from JEE Main 2026, covering the Haloalkanes and Haloarenes chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.