An organic compound (A) which has characteristic odour. On treatment with NaOH it forms two compounds (B ) and (C ) . Compound (B ) has molecular formula C_(7) H_(8) O whichon 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 hydrocarbon ( D ). Deduce the structure of (A), (B) ,(C ) and (D ).Write the sequence of reactions involved.

An organic compound (A) which has characteristic odour. On treatment w

1.	An organic compound (A) which has characteristic odour. On treatment with NaOH it forms two compounds (B ) and (C ) . Compound (B ) has molecular formula C_(7) H_(8) O whichon 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 hydrocarbon ( D ). Deduce the structure of (A), (B) ,(C ) and (D ).Write the sequence of reactions involved.
Answer» Solution :The compound (A) having CHARACTERISTIC odour is benzaldehyde, `C_(6) H_(5) CHO`. The reactions can be EXPLAINED as under `:` THUS, `A = C_(6) H_(5) CHO`,B =` C_(6) H_(5) CH_(2) OH` C `= C_(6) H_(5) COONa`,`D = C_(6) H_(6)`