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Question

The correct decreasing order of priority for functional groups of organic chemistry in the IUPAC nomenclature system is:
 


  1. > > >

  2. > > >
     

  3. > > >

  4. > > >


Solution

The correct option is B

> > >
 


As we have discussed in the videos, the correct order of priority for functional group of organic chemistry in IUPAC nomenclature is:

COOH > SO3H > COOM+ > COOR > COX > CONH2 > CN > CHO > C =O > OH > SH > NH2 > =NH > OR > SR

Therefore,

             From the given options, the correct order is

COOH > SO3H > CONH2 > CHO

Carboxylic acid > Sulphuric acid > Amide > Aldehyde

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