Question
Which from following is a correct priority order for selection of principal functional group for nomenclature of polyfunctional compound according to IUPAC system ?
MHT CET
Chemistry
General Organic Chemistry
2026
MHT CET 2026 (20 April Shift 1)
MHT CET Chemistry Question (2026) — Solution
Options
- A. - CHO > - CONH _2 > - OH > - C C -
- B. - CONH _2 > - CHO > - OH > - C C -
- C. - C C - > - OH > - CONH _2 > - CHO
- D. - C C - > - CHO > - CONH _2 > - OH
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 -
Related: Chemistry — General Organic Chemistry · All PYQ Banks