Which structural feature is common to aldehydes and ketones?
A) an oxygen atom bonded to both a carbon atom and a hydrogen atom
B) an oxygen atom bonded to two carbon atoms
C) an oxygen atom double bonded to a carbon atom
D) two oxygen atoms bonded to the same carbon atom

Question

Quizplus · Accepted Answer

The structural feature that is common to aldehydes and ketones is an oxygen atom double bonded to a carbon atom. Aldehydes have this double bonded oxygen at the end of the carbon chain, while ketones have it in the middle. Choice A is incorrect because it describes the structural feature of an alcohol, not an aldehyde or ketone. Choice B and D are incorrect because they do not describe the double bonded oxygen that is characteristic of aldehydes and ketones.

Which Structural Feature Is Common to Aldehydes and Ketones