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  4. The correct increasing order of reactivity for the following molecules towards electrophilic aromatic substitution is

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Q. The correct increasing order of reactivity for the following molecules towards electrophilic aromatic substitution isChemistry Question Image

AIIMSAIIMS 2011Alcohols Phenols and Ethers

Solution:

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.