Convert :
(i) Acetophenone to ethylbenzene
(ii) Ethanal to 2-aminoethanoic acid
(iii) Methyl chloride to ethanoic acid.

Explanation

The given conversions can be carried out as under :
(i) `underset("Acetophenone")(C_(6)H_(5)-overset(O)overset(||)C-CH_(3)) overset(NH_(2)-NH_(2))underset(KOH, "Glycol")to underset("Ethylbenzene")(C_(6)H_(5)CH_(2)CH_(3))`
This reaction can also be carried out using Zn — Hg/HCl
(ii) `underset("Ethanol")(CH_(3)CHO) overset([O])underset(KMnO_(4)//H_(2)SO_(4))to CH_(3)COOH overset("Red" P//Cl_(2))to underset("2-chloroethanoic acid")(underset(Cl)underset(|)(CH_(2)COOH)) overset(NH_(2))to underset("2-Aminoethanoic acid")(underset(NH_(2))underset(|)(CH_(2)COOH)`
(iii) `underset("Methyl chloride")(CH_(3)Cl+ KCN) to CH_(3)CN + H_(2)O overset(H^(+))to underset("Ethanoic acid")(CH_(3)COOH)`