MCQ
Which of the following is aromatic compound ?
- A

- ✓

- C

- D






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Reason : Resonance hybrid cannot be presented by a single structure.
$C{H_3}C{H_2}CH = CHC{H_3}$ $\xrightarrow{X}C{H_3}C{H_2}COOH\, + \,C{H_3}COOH$
The $X$ is