RAJASTHAN ­ PET Rajasthan PET Solved Paper-2012

  • question_answer
    A metal M forms water soluble MS 04 and inert MO. MO in aqueous solution forms insoluble \[M{{(OH)}_{2}}\]which is soluble in\[NaOH\]. Metal M is

    A)  \[Be\]          

    B) \[Mg\]

    C)  \[Ca\]          

    D) \[Si\]

    Correct Answer: A

    Solution :

     On moving down in a group, water solubility of alkaline earth metals decreases. Oxides and sulphates of alkaline earth metals are basic, except Be, which gives amphoteric salts. Hence, metal is Be.


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