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JEE Main & Advanced Sample Paper JEE Main - Mock Test - 43

  • question_answer
    When zeolite, which is hydrated sodium aluminium silicate, is treated with hard water the sodium ions are exchanged with-

    A) \[{{H}^{+}}\] ions                  

    B) \[C{{a}^{++}}\] ions

    C) \[SO_{4}^{-}\] ions                 

    D) \[O{{H}^{-}}\] ions

    Correct Answer: B

    Solution :

    [b] \[\underline{N{{a}_{2}}}Z\to +{{\underline{Ca}}^{+2}}\to \underline{Ca}Z\downarrow +2{{\underline{Na}}^{+}}\]


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