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Question

(1) CN , (2) CONH2 , (3) O||C, (4)CHO
The decreasing order of priority for the given functional groups (for IUPAC nomenclature) is:


A

2 > 1 > 4 > 3

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B

3 > 4 > 1 > 2

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C

1 > 2 > 4 > 3

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D

1 > 2 > 3 > 4

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Solution

The correct option is A

2 > 1 > 4 > 3


Answer of the given functional group with decreasing preference is

(2) CONH2 > (1) CN > (4) CHO > (3) O||C

So answer is (a) is 2 > 1 > 4 > 3


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