Ncert Exercises & Solutions

Match the structures of compounds given in Column I with the classes of compounds given in Column II.

Column I		Column II
A.		1.	Aryl halide
B.	CH₂=CH-CH₂-X	2.	Alkyl halide
C.		3.	Vinyl halide
D.	CH₂=CH-X	4.	Allylic halide

Codes

	A	B	C	D
1.	2	4	1	3
2.	3	4	1	2
3.	1	4	3	2
4.	4	1	3	2

Hint: Benzene ring containing halide is called aryl halide

In alkyl halide, the halogen atom is bonded to $s p^{3}$ hybridised carbon atom, which may be further bonded to one, two, or three alkyl groups, i.e., ${CH}_{3} - CH (X) - {CH}_{3}$

Allylic halides are those compounds in which the halogen atom is bonded to an allylic carbon. An allylic carbon is present next to a carbon-carbon double bond.

$C H_{2} = C H — C H_{2} — X$

Aryl halides are the compounds in which the halogen atom is bonded to sp² hybridized carbon atom of an aromatic ring, $C_{6} H_{5} X$

Vinyl halides are the compounds in which the halogen atom is bonded to an sp² hybridized carbon atom of a carbon-carbon double bond, i.e., ${CH}_{2} = CH - X$

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