A) \[-C\equiv C-\]
B) \[-OH\]
C) \[\underset{\begin{smallmatrix} || \\ C \end{smallmatrix}}{\mathop{-C-}}\,\]
D) \[\underset{\begin{smallmatrix} | \\ H \end{smallmatrix}}{\mathop{-C=}}\,\]
Correct Answer: D
Solution :
The order of preference for principal function groups is carboxylic acid, alcohols, triple bond, double bond.
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