Manipal Medical Manipal Medical Solved Paper-2013

  • question_answer
    Bauxite ore is treated with cone.\[NaOH\] solution at 500 K and 35 bar pressure for few hours and filtered hot. In the fittrate, the species present are,

    A)  \[NaAl{{(OH)}_{4}}\]and\[N{{a}_{2}}Si{{O}_{3}}\]

    B)  \[NaAl{{(OH)}_{4}}\]only

    C)  \[N{{a}_{2}}Si{{O}_{3}}\]and\[N{{a}_{2}}Ti{{(OH)}_{6}}\]

    D)  \[N{{a}_{2}}Si{{O}_{3}}\]only

    Correct Answer: A

    Solution :

     Both\[A{{l}_{2}}{{O}_{3}}\]and\[Si{{O}_{2}}\]dissolve in\[NaOH\]as \[NaAl{{(OH)}_{4}}\]and\[N{{a}_{2}}Si{{O}_{3}}\]respectively.


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