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JEE Main & Advanced Chemistry The s-Block Elements / s-ब्लॉक के तत्व Question Bank Self Evaluation Test - The s-Block Elements

  • question_answer
    Two metals (A) and (B) belong to the same group of the periodic table. Metal (A) forms an insoluble oxide but a soluble sulphate, metal (B) forms a soluble oxide but an insoluble sulphate. Both metals (A) and (B) form hydroxides which are soluble m alkalis, (A) and (B) are

    A) \[Ba\] and \[Mg\]      

    B) \[Na\] and \[K\]

    C) \[Mg\] and \[Ba\]

    D) \[K\] and \[Rb\]

    Correct Answer: C

    Solution :

    [c] \[MgO\] is insoluble, whereas \[MgS{{O}_{4}}\] is soluble, whereas \[BaO\] is soluble, but \[BaS{{O}_{4}}\] is insoluble.


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