The correct decreasing order of priority of functional groups in naming an organic compound as per IUPAC system is:
General Organic Chemistry (GOC) · Class 11 · JEE Main Previous Year Question
The correct decreasing order of priority of functional groups in naming an organic compound as per IUPAC system is:
- a
-COOH > -CONH₂ > -COCl > -CHO
- b✓
-SO₃H > -COCl > -CONH₂ > -CN
- c
-COOR > -COCl > -NH₂ > C=O
- d
-COOH > -COOR > -CONH₂ > -COCl
-SO₃H > -COCl > -CONH₂ > -CN
IUPAC Priority Series According to IUPAC, the priority of functional groups for suffix naming is: Carboxylic acid > Sulphonic acid > Esters > Acid Halides > Amides > Nitriles > Aldehydes > Ketones > Alcohols > Amines.
- Sulphonic acid () > Acid Chloride () > Amide () > Cyanide (). This perfectly follows the established priority order.
Step 3: Conclusion Option (b) is the correct decreasing order.
Practice this question with progress tracking
Want timed practice with adaptive difficulty? Solve this question (and hundreds more from General Organic Chemistry (GOC)) inside The Crucible, our adaptive practice platform.
More JEE Main General Organic Chemistry (GOC) PYQs
Given below are two statements: Statement-I: IUPAC name of HO-CH2-(CH2)3-CH2-COCH3 is 7-hydroxyheptan-2-one. Statement-II: 2-oxoheptan-7-ol is the correct IUPAC name for above compound. In the light…
According to IUPAC system, the compound is named as:
IUPAC name of the following compound is:
Statement-I: IUPAC name of Compound A is 4-chloro-1,3-dinitrobenzene Statement-II: IUPAC name of Compound B is 4-ethyl-2-methylaniline
Cyclohexene is 2cm type of an organic compound. (a) Benzenoid aromatic (b) Benzenoid non-aromatic (c) Acyclic (d) Alicyclic