Greater is the electron density on the aromatic ring, greater is the reactivity towards electrophilic aromatic substitution.
The nitro and chloro group is electron-withdrawing group thus it decreases the electron density from the ring thus making it unsuitable for electrophilic substitution reaction.
Whereas the methoxy group is electron-donating group and it increases electron density on benzene ring thus making it most suitable for electrophilic substitution reaction.
Alcohol is formed when a saturated carbon atom bonds to a hydroxyl (-OH) group. It is an organic compound that contains a hydroxyl functional group attached to a carbon atom.
Phenol is formed when the -OH group replaces the hydrogen atom in benzene. It is an organic compound in which a hydroxyl group directly attaches to an aromatic hydrocarbon.
Ether is formed when oxygen atom bonds to two alkyl or aryl groups. It is an organic compound that has an oxygen atom that is connected to two aryl and alkyl groups.
