Multiple choice general knowledge science & technology

Which of these contains the carbonyl group?

  1. Ketones

  2. Aldehydes

  3. Esters

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The carbonyl group (C=O) is a functional group consisting of a carbon atom double-bonded to an oxygen atom. Ketones contain the carbonyl group bonded to two carbon atoms, aldehydes have it bonded to at least one hydrogen atom, and esters contain it bonded to an oxygen atom that's part of an alkoxy group. All three classes of organic compounds contain the carbonyl group as their defining feature.

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