JEE MAIN - Chemistry (2022 - 26th July Evening Shift - No. 6)
The correct decreasing order of priority of functional groups in naming an organic Question: compound as per IUPAC system of nomenclature is
$$-\mathrm{COOH}>-\mathrm{CONH}_{2}>-\mathrm{COCl}>-\mathrm{CHO}$$
$$\mathrm{SO}_{3} \mathrm{H}>-\mathrm{COCl}>-\mathrm{CONH}_{2}>-\mathrm{CN}$$
_26th_July_Evening_Shift_en_6_1.png)
$$-\mathrm{COOH}>-\mathrm{COOR}>-\mathrm{CONH}_{2}>-\mathrm{COCl}$$
Explanation
The order of decreasing priority for the functional group is
_26th_July_Evening_Shift_en_6_2.png)
Hence correct order is
$$\mathrm{SO}_{3} \mathrm{H}>-\mathrm{COCl}>-\mathrm{CONH}_{2}>-\mathrm{CN}$$
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