Question

Which of the following is an functional isomer of butanal?

• A. 2 - butanone
• B. 2 - methylpropanal
• C. 2 - butanol
• D. Pent-2-en-1-ol

Answer 1

The correct option is A

2 - butanone

Butanal is a fuctional isomer of 2-butanone as both have same molecular formula and different functional group.


2-methylpropanal is chain isomer of butanal
2-butanol and pent-2-en-1-ol has different molecular formula. So, they can not be the isomers of butanal.