NEET Chemistry NEET PYQ-Organic Chemistry Some Basic Principles

  • question_answer
    The Lassaigne's extract is boiled with cone \[HN{{O}_{3}}\] while testing for halogens. By doing so it     [AIPMT (S) 2011]

    A) helps in the precipitation of AgCl

    B) increases the solubility product of AgCl

    C) increases the concentration of \[NO_{3}^{-}\] ions

    D) decomposes \[N{{a}_{2}}S\] and NaCN, if formed

    Correct Answer: D

    Solution :

    [d] and , if present in the extract, will be decomposed to   and  by . These will escape from the solution and will not interfere with the test for halogens.

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