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JEE Main · 2025 · 28 Jan 2025 · Shift 2 · General Organic Chemistry

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Given below are two statements :

Statement (I) :
(see structures)
and
(see structure)
isomeric compounds.

Statement (II) :
(see structure)
and
(see structure)
are functional group isomers.

In the light of the above statements, choose the correct answer from the options given below :
Structure A
A
Structure B
B
Structure C
C
Structure D
D
  1. (A)Both Statement I and Statement II are false
  2. (B)Both Statement I and Statement II are true✓ Correct
  3. (C)Statement I is true but Statement II is false
  4. (D)Statement I is false but Statement II is true

Answer: (B)

Solution

Statement I: the two structures given — a cyclic hydrocarbon and an open-chain alkene, both — share a molecular formula but differ in carbon skeleton, one cyclic and one straight-chain. Same formula, different structure makes them isomers, so Statement I is true.

Statement II: the two structures given — a straight-chain primary amine and a branched secondary amine, both — share a molecular formula but carry different functional groups ( vs amine). Same formula, different functional group makes them functional group isomers, so Statement II is also true.

Both statements are correct.

JEE Main · 2025 · 28 Jan 2025 · Shift 2 · Single correct option

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