Question

Propanal and propanone are:

• A. functional isomers
• B. enantiomers
• C. chain isomers
• D. structural isomers

Answer 1

The correct option is A functional isomers

(i) Structural isomers have different skeleton of carbon atom.
(ii) Enantiomers are pair of optical isomers which are related as non superimposable mirror images of each other.
(iii) Chain isomers have different chain structures.
(iv) Functional isomers have same molecular formula but different functional groups.

$\therefore$ They have different functional groups.

$\therefore$ They are functional isomers.

Option A is correct.