Q.• Draw the structures of the following compounds and classify them on the basis of C-O single bond and C = O double bond present in them, Ethyl alcohol, acetaldehyde, o-nitrophenol, Diethyl ether, isopropyl alcohol, acetone.
• What are carbonyl compounds?

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 …