MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Organic ChemistryHydrocarbonsPrevious Year Questions
Some meta-directing substituents in aromatic substitution are given. Which one is most deactivating? (NEET 2013)
A.–COOH
B.–NO2✓ Correct
C.C
D.–SO3H
Explanation
–NO2 is most deactivating due to –I and –M effect.
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