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MHT CET20228 Aug 2022Morning ShiftChemistryAlcohols Phenols and EthersActual

Which of the following compounds has difficulty in breaking C - X bond?

Options

  1. AO-nitrochlorobenzene
  2. BP - nitrochlorobenzene
  3. Cm-nitrochlorobenzene
  4. D2, 4, 6-trinitrochlorobenzene

Correct answer

C. m-nitrochlorobenzene

Step-by-step solution

In aryl halide, X atom is attached with sp ^2( C ) , the C - X bond in aryl halide is shorter than in alkyl halides. This makes C - X bond stronger in aryl halides. Under normal conditions, halobenzene's are inert to nucleophiles. However, Chlorobenzene can be made to react if the experimental conditions are: 1. High temperature and high pressure. 2. In presence of strong electron-withdrawing (- NO ₂ ) substituent at ortho and/or para positions. Thus, m - nitrochlorobenzene has difficulty in breaking C - X bond.

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