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
- ACH ₃ CH ₂ CHO
- BCH ₃ CHOHCH ₃
- CCH ₃ COCH ₃
- 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