MHT CET Chemistry Question (2026) — Solution

Step-by-step solution

The principal functional group in the given compound is the amine (-NH_2) group. The longest continuous carbon chain containing the carbon attached to the amine group and the double bond has 5 carbon atoms, making the parent chain a pentene. According to IUPAC rules, the chain is numbered to give the principal functional group the lowest possible locant, as the amine group has higher priority than the alkene double bond. Numbering from right to left places the amine group at position 2 and the double bond at position 3. Numbering from left to right would place the double bond at position 2 and the amine group at position 4, which is incorrect because the principal functional group must receive the lower number. Therefore, the correct IUPAC name is Pent-3-en-2-amine. Answer: Pent-3-en-2-amine