AIIMS 2017 Chemistry Diazonium Salts MCQ Question

Option C is correct because it represents the reaction of benzene diazonium chloride with HBF₄, resulting in the substitution of the diazonium group (−N₂⁺) with a fluorine atom, forming fluorobenzene (C₆H₅F). This reaction is an example of electrophilic aromatic substitution, where the diazonium ion acts as an electrophile. Other options may depict incorrect products or reaction pathways that do not align with the known chemistry of diazonium salts, such as incorrect substitution patterns or the formation of non-aromatic compounds. Understanding the reactivity of diazonium salts is crucial for predicting the outcomes of aromatic substitution reactions.