Please give stepwise solutions for Q2,3&4.
Chloroform,CHCl3 when warmed with silver powder gives acetylene.
3.The analyte is heated with alcoholic potassium hydroxide and chloroform in carbylamine reaction (Hoffman's isocyanide test). This is done for detecting primary amines. If a primary amine is present, the isocyanide (carbylamine) is formed which are foul smelling substances.