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

- C O O H > - S O_{3} H > - C O N H_{2} > - C H O

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- S O_{3} H > - C O O H > - C O N H_{2} > - C H O

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- C H O > - C O O H > - S O_{3} H > - C O N H_{2}

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- C O N H_{2} > - C H O > - S O_{3} H > - C O O H

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Solution

The correct option is A $- C O O H > - S O_{3} H > - C O N H_{2} > - C H O$
The decreasing order of priority for the functional groups of organic compounds in the IUPAC system of nomenclature is as follows:

$- C O O H > - S O_{3} H > - C O N H_{2} > - C H O$

$- C O O H$ functional group has higher priority than $- S O_{3} H, - C O N H_{2}$ and $- C H O$ functional groups.

Hence, option $A$ is correct.

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Similar questions

(1) $- C \equiv N$ , (2) $- C O N H_{2}$ , (3) $- O | | C -$ , (4) $- C H O$
The decreasing order of priority for the given functional groups (for IUPAC nomenclature) is:

Q. Assertion :In the case of polyfunctional compounds, the choice of principal functional group is made on the basis of order of preference. Reason: The order of decrease priority for some functional group is

- C O O H, - S O_{3} H, - C O O R, - C O C l_{3}, - C O N H_{2}, - C N, - C H = O, - O H, C = O, C = C, - C = C -

Q. The decreasing order of priority for the following functional groups is:
I.

- C O O H

II.

- S O_{3} H

III.

- C O O R

IV.

- C O C l

Q. The decreasing order of priority for the following functional groups is :
I.

- C \equiv N

II.

- C O N H_{2}

III.

- O H

IV.

- C H O

Q. Out of the following how many groups are meta directing on electrophilic substitution of benzene?

- C O O H, - C N, - N H_{2} - C O C H_{3}, - N H C O C H_{3}, - O H, - C H O, - S O_{3} H, - C l, - N O_{2}

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