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JEE Main & Advanced JEE Main Paper (Held on 09-4-2019 Morning)

  • question_answer
    The ore that contains the metal in the form of fluoride is :             [JEE Main 9-4-2019 Morning]

    A) magnetite                    

    B) sphalerite

    C) malachite                    

    D) cryolite

    Correct Answer: D

    Solution :

    \[N{{a}_{3}}Al{{F}_{6}}\to \]Cryolite is the fluoride ore. Magnetite \[F{{e}_{3}}{{O}_{4}}\] Sphalerite ZnS Malachite \[Cu{{(OH)}_{2}}.CuC{{O}_{3}}\]


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