Q.• Classify the followings as simple and mixed ketones.
• Benzophenone, acetone, butanone, acetophenone.

Aldehydes and ketones both contain the carbonyl group, >C=O, as their defining functional group and are together called carbonyl compounds. In an aldehyde the carbonyl carbon carries at least one hydrogen besides an alkyl/aryl group (functional group -CHO, called formyl or the aldehydic carbonyl group); in a ketone the carbonyl carbon carries two alkyl or aryl groups, identical or different (the ketonic carbonyl group). Both families split further into ALIPHATIC (the carbonyl group attached to a saturated carbon chain -- with formaldehyde kept aliphatic by exception even though its -CHO touches no carbon at all) and AROMATIC (the carbonyl group attached directly to an aromatic ring). Aliphatic ketones split once more into SIMPL …