An organic compound 'A' having molecular formula `C_(6)H_(6)O` gives a characeristic colour with aqueous `FeCl_(3)` solution. When 'A' is treated with `CO_(2)` and `NaOH` at `400 K` under pressure, compound 'B' is obtained. The compound 'B' upon acidification gives compound 'C' which reacts with acetyl chloride to form 'D'. It is a polular pain killer. Deduce the structures of A, B, C and D.

An organic compound 'A' having molecular formula C_6H_6O gives a characteristic colour with aqeuous FeCI_3 solution. When 'A' is treated with CO_2 and NaOH at 400K under pressure 'B' is obtained. The compound B on acidification gives compound C which react with acetyl chloride to form D which is a popular pain killer. Deduce the structure of A, B, C and D.

(i) How will you convert phenol to benzoic acid? (ii) An organic compound A having molecular formula, C_6H_6O gives a characteristic colour with aqueous FeCl_3 solution. A on treatment with CO_2 and NaOH at 400 K under pressure gives B which on acidification gives a compound C. The compound C reacts with acetyl chloride to give D which is a popular pain killer. Deduce the structure of A, B, C and D.

An organic compound 'A' having molecular formula C_(6)H_(6)O gives a characteristic colour with aqueous FeCl_(3) solution. When 'A' is treated with CO_(2) and NaOH at 400K under pressure. 'B' is obtained. B on acidification gives C when C treated with CH_(3)COCl gives a popular pain killer D. Deduce the strucutrues of A,B,C and D.

An organic compound (A) has 76.6% C and 6.38% H. Its vapour density is 47. It gives characteristic colour with FeCl_(3) solution. (A) when treated with CO_(2) and NaOH at 140^(@)C under pressure gives (B) which on acidification gives (C ). (C ) reacts with acetyl chloride to give (D) which is a well known pain killer. Identify (A), (B), (C ), (D) and explain the reactions involved.