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

(a) - COOH - SO3H - CONH2 - CHO

(b) - SO3H - COOH - CONH2 - CHO

(c) - CHO - COOH - SO3H - CONH2 

(d) - CONH2 - CHO - SO3H - COOH

1 Answer

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Best answer

Correct Option (a) - COOH - SO3H - CONH2 - CHO

Explanation:

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

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