NO2 group being electron withdrawing reduces electron density at output positions. Hence, now the meta-position becomes electron rich on which the electrophile (nitronium ion) attacks during nitration. 
Nitrobenzene on reaction with conc. HNO3/H2SO4 at 80−100∘C forms which one of the following products?
Held on 30 Apr 2013 · Verified 9 Jul 2026.
1,2-dinitrobenzene
1,3-dinitrobenzene
1,4-dinitrobenzene
1,2,4-trinitrobenzene
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Markovnikov's rule is applicable to:
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