Fundamentholfundamenthol

JEE Main 2025 Apr 3 Shift 1, Chemistry Q7: Structural Isomerism

JEE Main2025Apr 3, Shift 1Chemistry
Q.

Identify the correct statements from the following

Choose the correct answer from the options given below

  1. A

    C & D only

  2. B

    B & C only

  3. C

    A & B only

  4. D

    A, B & C only

Solution

A. Pentan-3-one and pentan-2-one have the same molecular formula and the same functional group (ketone) but differ in the alkyl groups attached to the carbonyl carbon. They are metamers. ✓

B. A nitrile () and an isocyanide () have the same molecular formula but different functional groups, so they are functional group isomers. ✓

C. The two structures shown are actually different members of the alcohol family differing by a unit, making them homologues rather than position isomers. ✗

D. A primary and a secondary amine of the formulas shown differ in functional class, not by a increment, so they are not homologues. ✗

Only A and B are correct.

Concept behind this question

Structural IsomerismNotes, formulas and examples →

More previous year questions on Structural Isomerism

Practice more Chemistry

Concept-wise practice with instant solutions on Fundamenthol.

Start practicing →