JEE Main & Advanced Chemistry Nitrogen Containing Compounds Question Bank Preparation of Nitrogen Containing Compounds

  • question_answer Azo-dyes are prepared from :    [BHU 2004; Pb. CET 2001]

    A)                 Aniline 

    B)                 Salicylic acid

    C)                 Benzaldehyde  

    D)                 Chlorobenzene

    Correct Answer: A

    Solution :

               When aniline is treated with \[HN{{O}_{2}}\] at 0?5°C then diazonium salt is formed and by the coupling of diazonium salt and phenol azo dyes are prepared.           


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