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KCET2024ChemistryHaloalkanes and Haloarenes

In the given sequence of reactions, identify ^ P^ , ' Q ^ , R^ and ' S respectively. CH ₂= | ~~~~ Br CH ₂ - | ~~~~ Br CH ₂ Q CH ₂= CH - Br R CH CH s C ₆ H ₆

Options

  1. ABr ₂ , Alc. KOH , NaOH , Al ₂ O ₃
  2. BHBr , Alc . KOH , CaC ₂, KMnO ₄
  3. CHBr , Alc. KOH , NaNH ₂ , Red hot iron tube
  4. DBr ₂ , Alc. KOH , NaNH ₂ , Red hot iron tube

Correct answer

D. Br ₂ , Alc. KOH , NaNH ₂ , Red hot iron tube

Step-by-step solution

The complete reaction sequence involved is as follows Thus, the reagent P, Q, R and S are Br ₂ , alc. KOH, NaNH ₂ , Red hot iron respectively.

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