1.

Which of the following would be least reactive towards bromide

Answer»

<P>Nitrobenzene
Phenol
Anisole
Chlorobenzene

Solution :Nitrobenzene is least reactive towards bromine because of presence of `-NO_2` group decreases electron DENSITY at o and p positions and HENCE attack of electrophile on the benzene nuclues is difficult because + ve CHARGE on o and p position REPEL the incoming electrophile.


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