MCQ
Butanone is a four$-$carbon compound having the functional group:
  • A
    $\ce{−OH}$
  • B
    $\ce{−COOH}$
  • $\ce{−CO−}$
  • D
    $\ce{−CHO}$

Answer

Correct option: C.
$\ce{−CO−}$
Butanone $\ce{(C_2H_5-CO-CH_3)}$ is a four$-$carbon compound having the functional group $\ce{-CO-}$ $($ketones$).$

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