2-methylprop-1-ene is a structural isomer of?

A. But-1-yne
B. 2-methyl But-1-ene
C. 3-methyl prop-1-yne
D. But-2-ene

Correct Answer:

Option D – But-2-ene

Explanation

Isomers of Butene: are But-1-ene, But-2-ene, 2-Methylpropene or 2-methylprop-1-ene