Question

But-1-ene and but-2-ene are examples of ______ isomerism.

Options

• chain

• position

• functional

Answer 1

But-1-ene and but-2-ene are examples of position isomerism.

Explanation:

The isomerism that is due to the difference in the position of the double bond in the same carbon chain is called position isomerism.

\[\ce{\underset{(But-1-ene)}{^δCH3 - ^γCH2 - ^βCH = ^αCH2}}\]

\[\ce{\underset{(But-2-ene)}{^δCH3 - ^γCH = ^βCH - ^αCH3}}\]