JEE Main 202628 JanuaryEvening Shift
- Exam
- JEE Main
- Year
- 2026
- Date
- 28 January
- Shift
- Evening Shift
- Subject
- Chemistry
- Chapter
- Haloalkanes and Haloarenes
JEE Main 2026 · 28 January · Evening Shift · Chemistry · Haloalkanes and Haloarenes
Which of the following reaction is NOT correctly represented?
Which of the following reaction is NOT correctly represented?







Options
- A

- B

- C

- D

Correct answer
D. 
Step-by-step solution
Reaction (1): Toluene + /Fe in dark conditions undergoes electrophilic aromatic substitution on the benzene ring, producing ortho and para bromotoluenes. This is correctly represented.
Reaction (2): The diazonium salt reacts with /HBr via the Sandmeyer reaction to produce bromobenzene. This is correctly represented.
Reaction (3): Toluene + with light () undergoes free radical substitution at the benzylic position, producing benzyl bromide (CH₂Br). This is correctly represented.
Reaction (4): Cyclohexene is shown producing an allylic bromination product, but cyclohexene with and light undergoes electrophilic addition across the C=C double bond to form dibromocyclohexene or undergoes addition rather than simple allylic substitution. This representation is incorrect.
Reaction (2): The diazonium salt reacts with /HBr via the Sandmeyer reaction to produce bromobenzene. This is correctly represented.
Reaction (3): Toluene + with light () undergoes free radical substitution at the benzylic position, producing benzyl bromide (CH₂Br). This is correctly represented.
Reaction (4): Cyclohexene is shown producing an allylic bromination product, but cyclohexene with and light undergoes electrophilic addition across the C=C double bond to form dibromocyclohexene or undergoes addition rather than simple allylic substitution. This representation is incorrect.