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NEET Sample Paper NEET Sample Test Paper-24

  • question_answer
     A salt, which on heating with cone.\[{{H}_{2}}S{{O}_{4}}\]gives violet vapours, is

    A)  Iodide                          

    B)  Nitrate

    C)  Sulphate                      

    D)  Bromide

    Correct Answer: A

    Solution :

    \[KI+{{H}_{2}}S{{O}_{4}}\xrightarrow{\Delta }KHS{{O}_{4}}+HI\] \[Conc.{{H}_{2}}S{{O}_{4}}+2HI\to \underset{\begin{smallmatrix}  \text{Violet} \\  \text{vapour} \end{smallmatrix}}{\mathop{2{{H}_{2}}O+{{I}_{2}}+S{{O}_{2}}\uparrow }}\,\]


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