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NEET Chemistry Analytical Chemistry Question Bank Self Evaluation Test - Analytical Chemistry

  • question_answer
    The sodium extract prepared from sulphanilic acid, contains \[SC{{N}^{-}}\]. It gives blood red colouration with

    A) a mixture of \[N{{a}_{2}}S\] and \[C{{S}_{2}}\]

    B) \[FeC{{l}_{3}}\]

    C) \[FeS{{O}_{4}}\]

    D) \[N{{a}_{2}}S{{O}_{3}}\]

    Correct Answer: B

    Solution :

    [b] \[SC{{N}^{-}}+F{{e}^{3+}}\xrightarrow{{}}\underset{blood\text{ }red\text{ }ppt.}{\mathop{Fe{{(SCN)}_{3}}}}\,\]  


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