Chemistry · IUPAC Nomenclature

JEE Main 2026 — 2 April, Morning Shift — Question 53

In IUPAC nomenclature, the correct order of decreasing priority of functional group is :

Option A:
$-\mathrm{CONH}_{2},>\mathrm{C}=\mathrm{O},-\mathrm{CHO},-\mathrm{NH}_{2},-\mathrm{C} \equiv \mathrm{C}-$
Option B:
$-\mathrm{CONH}_{2},-\mathrm{COOCH}_{3},-\mathrm{CHO},-\mathrm{NH}_{2},-\mathrm{OH}$
Option C:
$-\mathrm{CONH}_{2},-\mathrm{CHO},>\mathrm{C}=\mathrm{O},-\mathrm{NH}_{2},-\mathrm{C} \equiv \mathrm{C}-$
Correct
Option D:
$-\mathrm{CONH}_{2},-\mathrm{CHO},-\mathrm{CN},-\mathrm{NH}_{2},-\mathrm{C} \equiv \mathrm{C}-$

Answer: C

Sol. Theory based

Answer key and solution verified before publishing.

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