BCECE Medical BCECE Medical Solved Papers-2009

  • question_answer
    The salt responsible for permanent hardness of \[{{H}_{2}}O\] is

    A)  \[N{{a}_{2}}S{{O}_{4}}\]

    B)  \[MgHC{{O}_{3}}\]

    C)  \[NaCl\]

    D)  \[MgC{{l}_{2}}\]

    Correct Answer: D

    Solution :

    Chlorides and sulphates of Calcium and magnesium are responsible for permanent hardness of water.


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