Match List I with List II. Choose the correct answer from the options given below :- List I Isomeric pairs…

Match List I with List II.

Choose the correct answer from the options given below :-

  List I
Isomeric pairs		   List II
Type of isomers
A Propanamine and N-
Methylethanamine		 I Metamers
B Hexan-2-one
Hexan-3-one		 II Positional
isomers
C Ethanamide and
Hydroxyethanimine		 III Functional isomers
D o-nitrophenol and pnitrophenol IV Tautomers

 

  1. A-III, B-IV, C-I, D-II
  2. A-IV, B-III, C-I, D-II
  3. A-II, B-III, C-I, D-IV
  4. A-III, B-I, C-IV, D-II

Solution

Metamers are the isomers having the same molecular formula but different alkyl groups on two sides of functional groups. Positional isomers are constitutional isomers with the same carbon skeleton and will have the same functional group.  Functional isomers are structural isomers that have the same molecular formula (that is, the same number of atoms of the same elements), but the atoms are connected in different ways so that the groupings are dissimilar. Tautomerism is a phenomenon where a single chemical compound tends to exist in two or more interconvertible structures that are different in terms of the relative position of one atomic nucleus which is generally the hydrogen.

A. Propanamine and N- Methylethanamine (CH3CH2CH2NH2 and CH3CH2NHCH3)

B. Hexan-2-one Hexan-3-one 

C. Ethanamide Hydroxyethanimine

D. o-Nitrophenol p-nitrophenol

So, the correct option is D.

Asked in: JEE Main 2023 (25 Jan Shift 2)

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