Question
An organic compound $(A)$ has characteristic odour. On treatment with $\ce{NaOH},$ it forms compounds $(B)$ and $(C).$ Compound $(B)$ has molecular formula $\ce{C_7H_8O}$ which on oxidation gives back $(A).$ The compound $(C)$ is a sodium salt of an acid. When $(C)$ is treated with soda$-$lime, it yields an aromatic compound $(D).$ Deduce the structures of $(A), (B), (C)$ and $(D).$ Write the sequence of reactions involved.


