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BITSAT2011ChemistryAldehydes and KetonesActual

The reagent (s) which can be used to distinguish acetophenone from benzophenone is (are)

Options

  1. A2,4 - dinitrophenylhydrazine
  2. Baqueous solution of NaHSO ₃
  3. Cbenedict reagent
  4. DI ₂ and NaOH

Correct answer

D. I ₂ and NaOH

Step-by-step solution

I ₂ and NaOH react with acetophenone ( C ₆ H ₅ COCH ₃ ) to give yellow ppt. of CHI ₃ but benzophenone ( C ₆ H ₅ COC ₆ H ₅ ) does not give haloform test.

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