Identify the product formed in the given reaction.

Step-by-step solution

The reaction sequence begins with the reduction of nitrobenzene using Sn/HCl . This is a standard reduction reaction that converts the nitro group ( -NO₂ ) into an amino group ( -NH₂ ). Thus, compound A is aniline ( C₆H₅NH₂ ). The second step involves the reaction of aniline with chloroform ( CHCl₃ ) in the presence of aqueous sodium hydroxide ( NaOH ). This is the carbylamine reaction (also known as the isocyanide test), which is a characteristic reaction for primary amines. In this reaction, the primary amine is