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8.1. Aldehydes and ketones — Chemistry STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceChemistry8.1. Aldehydes and ketones1 Mark
MCQ
When a nucleophile encounters a ketone, the site of attack is
  • ✓
    the carbon atom of the carbonyl
  • B
    the oxygen atom of the carbonyl
  • C
    both the carbon and oxygen atoms, with equal probability
  • D
    no attack occurs as ketones do not react with nucleophiles
✓

Answer

Correct option: A.
the carbon atom of the carbonyl
a
$(a)$ $\underset{\delta \oplus }{\mathop{\begin{matrix}
   O  \\
   ||  \\
   R-C-R  \\
\end{matrix}}}\,$ more positive on carbon of carbonyl.

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