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MHT CET Medical202622 April 2026Morning ShiftChemistryAldehydes and KetonesActual

An organic compound 'A' ( C ₃ H ₆ O ) gives a positive iodoform test but does not reduce Tollens' reagent. Identify the compound 'A':

Options

  1. ACH ₃ CH ₂ CHO
  2. BCH ₃ CHOHCH ₃
  3. CCH ₃ COCH ₃
  4. DCH ₃ CH ₂ CH ₂ OH

Correct answer

C. CH ₃ COCH ₃

Step-by-step solution

The given organic compound 'A' has the molecular formula C ₃ H ₆ O . Since it does not reduce Tollens' reagent, it is not an aldehyde. Therefore, it must be a ketone. Since it gives a positive iodoform test, it must contain a methyl ketone group ( CH ₃ CO - ). The only ketone with the molecular formula C ₃ H ₆ O is propanone (acetone), which is CH ₃ COCH ₃ . Note that while propan-2-ol ( CH ₃ CHOHCH ₃ ) also gives a positive iodoform test and does not reduce Tollens' reagent, its molecular formula is C ₃ H ₈ O , wh

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