Reaction (1): Toluene + Br2/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 Cu2Br2/HBr via the Sandmeyer reaction to produce bromobenzene. This is correctly represented.
Reaction (3): Toluene + Br2 with light (hν) 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 Br2 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.



