Question

Which of the following is correctly matched?

	Class of compounds		IUPAC group prefix
A	Sulphonic acids	1	nitro
B	Amines	2	amino-
C	Amides	3	-carbamyl
D	Nitro compounds	4	sulpho

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

Answer 1

Correct Answer - Option 2 : A- 4,B- 2,C- 3,D- 1

The correct answer is 2 i.e. A- 4,B- 2,C- 3,D- 1.

Explanation:

Class of compounds	Functional group structure	IUPAC group prefix	IUPAC group suffix	Example
Ethers	-R-O-R-	alkoxy-	-	Ethoxyethane
Carboxylic acid	-COOH	carboxy	-oic acid	Butanoic acid
Carboxylate ions	-COO-	-	-oate	Sodium butanoate
Esters	-COOR	alkoxycarbonyl	-oate	Methyl propanoate
Acyl halides	-COX	halocarbonyl	-oyl halide	Butanoyl chloride
Amines	-NH2,>NH,>N-	amino-	-amine	Butan-2-mine
Amides	-CONH2, -CONHR, -CONR2	-carbamyl	-amide	Butanamide
Nitro compounds	-NO2	nitro	-	1-Nitrobutane
Sulphonic acids	-SO3H	sulpho	sulphonic acid	Methylsulphonic acid