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ChemistryJEE Main 22 Jan 2026, Shift 1·Q9·MCQ·Easy–moderate

Haloalkanes & Haloarenes · SN2 nucleophilicity order

The correct order of reactivity of CHX3Br\ce{CH3Br} in methanol with the following nucleophiles is

FX−\ce{F-}, IX−\ce{I-}, CX2HX5OX−\ce{C2H5O-} and CX6HX5OX−\ce{C6H5O-}

  1. (1)IX−\ce{I-} >> CX6HX5OX−\ce{C6H5O-} >> FX−\ce{F-} >> CX2HX5OX−\ce{C2H5O-}
  2. (2)IX−\ce{I-} >> CX2HX5OX−\ce{C2H5O-} >> CX6HX5OX−\ce{C6H5O-} >> FX−\ce{F-}
  3. (3)IX−\ce{I-} >> CX2HX5OX−\ce{C2H5O-} >> FX−\ce{F-} >> CX6HX5OX−\ce{C6H5O-}
  4. (4)IX−\ce{I-} >> FX−\ce{F-} >> CX6HX5OX−\ce{C6H5O-} >> CX2HX5OX−\ce{C2H5O-}

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See the full 22 Jan 2026, Shift 1 paper