JEE Main & Advanced Chemistry The s-Block Elements / s-ब्लॉक के तत्व Question Bank Alkali Metals

  • question_answer
    Which is an ore of potassium [DPMT 1984; CPMT 1986; Kurukshetra CEE 1998]

    A) Carnellite

    B) Cryolite

    C) Bauxite

    D) Dolomite

    Correct Answer: A

    Solution :

    Carnellite - \[KCl.\,\,MgC{{l}_{2}}.\,\,6{{H}_{2}}O\] Cryolite - \[N{{a}_{3}}Al{{F}_{6}}\] Bauxite - (\[A{{l}_{2}}{{O}_{3}}.2{{H}_{2}}O\]) Dolomite - \[MgC{{O}_{3}}.\]\[CaC{{O}_{3}}\]

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