In this compound side chain contains ester group, hence benzene ring will be treated as phenyl prefix with nitro group at position 3 . Esters are named as alkyl alkanoate. Alkyl chain is not included in numbering. So, the name will be Ethyl- 2 -methyl- 2 -( 3 -nitrophenyl)propanoate.

In this compound two ester groups are present on benzene. Hence, we can include only one as main chain and other group will be considered as side chain. Since, benzene ring is the part of ester group, so it will be considered as root chain. The ester group that will be considered as side chain will be named as alkanoyloxy, with its position on benzene ring. The other ester group considered as root chain in named as alkyl alkanoate. Since, ester carbon can not be included in benzene ring it is named as carboxylate. Ethyl 4 -propanoyloxybenzenecarboxylate.

This compound contains two functional groups: Carboxylic acid and acyl chloride. Carboxylic acid will get preference. Acyl chloride will be treated as a side chain and will be named chloroalkanoyl with its position on benzene ring. Root chain will include benzene ring. Since the carboxylic carbon can not be included in the main chain will be named as carboxylic acid. 3 -chlorocarbonylbenzenecarboxylic acid.

This compound contains two functional groups alcohol and acyl chloride. Acyl chloride will get preference. - OH will be treated as side chain and will be named as hydroxy with its position on benzene ring. Root chain will include benzene ring. Since, the acyl carbon can not included in main chain will be named as carbonyl chloride. 4 -Hydroxybenzenoyl chloride

In this compound two ester groups are present on benzene. Hence, we can include only one as main chain and other group will be considered as side chain. Since, benzene ring is the part of ester group, so it will be considered as root chain. The ester group that will be considered as side chain will be named as alkanoyloxy, with its position on benzene ring. The other ester group considered as root chain in named as alkyl alkanoate. Since, ester carbon can not be included in benzene ring it is named as carboxylate. In one of the ester group methyl group is alkyl group and in other benzene ring, so the ester with methyl as alkyl will be the root chain. Methyl 4 -ethanoyloxybenzenecarboxylate.

This compound contains two functional groups, alcohol and sulphonic acid. Sulphonic acid will get preference. - OH will be treated as side chain and will be named as hydroxy with its position on benzene ring. The root chain will include benzene ring. The numbering will be done as per the lowest locant rule. 3 - hydroxybenzensulphonic acid.