Arrange the following functional group in order of priority accor… - Vidyadip

MCQ

Arrange the following functional group in order of priority according to $IUPAC$ system ?
$-CHO, -COOH, -SO_3H, -CONH_2$

A
$-COOH > -CHO > -SO_3H > -CONH_2$
✓
$-COOH > -SO_3H > -CONH_2 > -CHO$
C
$-SO_3H > -COOH > -CONH_2 > -CHO$
D
$-COOH > -CONH_2 > -CHO > -SO_3H$

✓

Answer

Correct option: B.

$-COOH > -SO_3H > -CONH_2 > -CHO$

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

$-\mathrm{COOH}>-\mathrm{SO}_{3} \mathrm{H}>-\mathrm{CONH}_{2}>-\mathrm{CHO}$

Option $\mathrm{B}$ is correct.

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