Match List-I with List-II.List-I(Compound)List-II(Class of halide)(A)…

The correct answer is Option (4) → A-III, B-IV, C-I, D-II

Halides are classed by the carbon atom that carries the halogen. In allylic and benzylic halides that carbon is sp³ and sits next to a C=C or a ring; in vinylic and aryl halides the halogen is on an sp² carbon of the C=C or of the ring itself.

(A) 3-Bromopropene, \( \ce{CH2=CH-CH2Br} \) (allyl bromide) — This matches (III) Allylic halide. Bromine is on the CH₂ carbon next to the double bond, an sp³ allylic carbon.

(B) Chlorophenylmethane, \( \ce{C6H5CH2Cl} \) (benzyl chloride) — This matches (IV) Benzylic halide. Chlorine is on the sp³ CH₂ carbon attached to the ring, not on the ring.

(C) Chloroethene, \( \ce{CH2=CHCl} \) (vinyl chloride) — This matches (I) Vinylic halide. Chlorine is on an sp² carbon of the double bond itself.

(D) 1-Chloro-2-methylbenzene (o-chlorotoluene) — This matches (II) Aryl halide. Chlorine is bonded directly to a ring carbon; the methyl group beside it does not carry the halogen, so the compound is not benzylic.

NCERT (2026-27 edition):
6.1.2 Compounds Containing sp³ C—X Bond (X= F, Cl, Br, I)

(b) Allylic halides – “These are the compounds in which the halogen atom is bonded to an sp³-hybridised carbon atom adjacent to carbon-carbon double bond (C=C) i.e. to an allylic carbon.”

(c) Benzylic halides – “These are the compounds in which the halogen atom is bonded to an sp³-hybridised carbon atom attached to an aromatic ring.”

6.1.3 Compounds Containing sp² C—X Bond

(a) Vinylic halides – “These are the compounds in which the halogen atom is bonded to a sp²-hybridised carbon atom of a carbon-carbon double bond (C = C).”

(b) Aryl halides – “These are the compounds in which the halogen atom is directly bonded to the sp²-hybridised carbon atom of an aromatic ring.”

Table 6.1: Common and IUPAC Names of some Halides