Question

Choose the incorrect IUPAC name of an organic compound:

• A. pent-3-ene
• B. 2-methyl cyclopropene
• C. 3-hydroxy propene
• D. All of these

Answer 1

The correct option is D All of these

(a) Double bond should be given lowest number possible, so the correct name is pent-2-ene.

(b) Substituted double bond should be given the lowest number possible, so the correct name is 1-methylcycloprop-1-ene or 1-methylcyclopropene.

(c) Hydroxy group has a greater priority than double bond so the correct name is prop-2-en-1-ol or prop-2-enol.