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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
    The metal X is prepared by the electrolysis of fused chloride. It reacts with hydrogen to form a colourless solid from which hydrogen is released on treatment with water. The metal is:

    A) \[Ca\]   

    B) \[Al\]   

    C) \[Zn\]  

    D) \[Cu\]

    Correct Answer: A

    Solution :

    [a] \[Ca+{{H}_{2}}\xrightarrow{{}}Ca{{H}_{2}}+2{{H}_{2}}O\] \[\xrightarrow{{}}Ca{{(OH)}_{2}}+{{H}_{2}}\]


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