A carbonyl compound A having molecular formula `C_(5)H_(10)O` forms crystalline precipitate with sodium bisulpite and gives positive iodoform test. A does not reduce Fehling solution. Identify A.

(a) An organic compound (A) of molecular formula C_(6)H_(6)O gives white preclpitate with bromine water. (A) on reaction with NaOH gives (B). (B) reacts with methyl lodlde in presence of dry ether gives (C) of molecular formula C_(7)H_(8)O which will not liberate H_(2) gas with metallic Na (C) reaction with acetyl chloride gives (D) and (E) of formula which are position isomers. Identify A,B,C,D &E and explain the reaction (b ) (i) What happens when n-propyl benzene is oxidised using H^(+)//KMnO_(4) (ii) Identify A,B, andC