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JEE Main levelSingle correct optionDifficulty 2 of 3o2136

Which sequence of reactions converts benzene mainly into 1-bromo-3-nitrobenzene?

  1. Afirst , then in in the dark with no catalyst
  2. Bfirst , then
  3. Cfirst , then
  4. Dfirst and then again

Answer: B

The meta relationship requires the meta-directing group to be introduced first. Nitration gives nitrobenzene, and bromination with then enters meta. Bromination first would give o- and p-bromonitrobenzene because Br is an o/p director.
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