Question

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

Solution

## The correct option is D 2 > 1 > 4 > 3 Answer of the given functional group with decreasing preference is (2) −CONH2 > (1) −C≡N > (4) −CHO > (3) −O||C− So answer is (a) is 2 > 1 > 4 > 3

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