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MHT CET202620 April 2026Morning ShiftChemistryGeneral Organic ChemistryActual

Which from following is a correct priority order for selection of principal functional group for nomenclature of polyfunctional compound according to IUPAC system ?

Options

  1. A- CHO > - CONH ₂ > - OH > - C C -
  2. B- CONH ₂ > - CHO > - OH > - C C -
  3. C- C C - > - OH > - CONH ₂ > - CHO
  4. D- C C - > - CHO > - CONH ₂ > - OH

Correct answer

B. - CONH ₂ > - CHO > - OH > - C C -

Step-by-step solution

According to the IUPAC nomenclature rules for polyfunctional compounds, the priority order of functional groups for selecting the principal functional group is: Carboxylic acids > Sulfonic acids > Esters > Acid halides > Amides > Nitriles > Aldehydes > Ketones > Alcohols > Amines > Alkenes > Alkynes. Comparing the given functional groups, the correct priority order is: - CONH ₂ > - CHO > - OH > - C C - Answer: - CONH ₂ > - CHO > - OH > - C C -

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