The correct decreasing order of priority for the functional groups of organic compounds in the IUPAC system…

The correct decreasing order of priority for the functional groups of organic compounds in the IUPAC system of nomenclature is
  1. $-\mathrm{COOH},-\mathrm{SO}_3 \mathrm{H},-\mathrm{CONH}_2,-\mathrm{CHO}$
  2. $-\mathrm{SO}_3 \mathrm{H},-\mathrm{COOH},-\mathrm{CONH}_2,-\mathrm{CHO}$
  3. $-\mathrm{CHO},-\mathrm{COOH},-\mathrm{SO}_3 \mathrm{H},-\mathrm{CONH}_2$
  4. $-\mathrm{CONH}_2,-\mathrm{CHO},-\mathrm{SO}_3 \mathrm{H},-\mathrm{COOH}$

Solution

$ -\mathrm{SO}_3 \mathrm{H},-\mathrm{COOH},-\mathrm{CONH}_2,-\mathrm{CHO} $

Asked in: JEE Main 2008

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