JEE Main Chemistry Question (2026) — Solution

Step-by-step solution

Reaction (1): Toluene + Br_2/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 Cu_2Br_2/HBr via the Sandmeyer reaction to produce bromobenzene. This is correctly represented. Reaction (3): Toluene + Br_2 with light (h ) 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 Br_2 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.