Question
What is the correct IUPAC name for a molecule that has two amino groups in opposing (para) locations around a benzene ring?
MHT CET
Chemistry
General Organic Chemistry
2026
MHT CET 2026 (15 April Shift 2)
MHT CET Chemistry Question (2026) — Solution
Options
- A. Benzenediamine
- B. Benzene-1,4-diamine
- C. p-Aminoaniline
- D. 4-Aminobenzenamine
Answer
B. Benzene-1,4-diamine
Step-by-step solution
The molecule consists of a benzene ring with two amino (-NH_2) groups attached at opposite positions. According to IUPAC nomenclature rules, the parent hydrocarbon is benzene. The two amino groups are indicated by the suffix "diamine". The positions of the amino groups are numbered to give them the lowest possible locants. Since they are at opposite positions (para), the locants are 1 and 4. Combining these parts, the correct IUPAC name is benzene-1,4-diamine. Answer: Benzene-1,4-diamine
Related: Chemistry — General Organic Chemistry · All PYQ Banks