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JEE Main & Advanced Chemistry Organic Chemistry: Some Basic Principles & Techniques / कार्बनिक रसायन : कुछ मूलभूत सिद्धांत एवं तकन Question Bank Mock Test - General Principles Processes of Isolation of Elements

  • question_answer
    Wolframite (\[FeW{{O}_{4}}\]) impurities present in cassiterite (\[Sn{{O}_{2}}\]) can be separated by the process of

    A) froth floatation

    B) zone refining

    C) electromagnetic separation

    D) gravity separation

    Correct Answer: A

    Solution :

    [a] Electromagnetic separation method of concentration is employed when either the ore or the impurities associated with it are magnetic in nature. Tinstone or cassiterite \[(Sn{{O}_{2}})\] an ore of tin being non-magnetic can be separated from magnetic impurities\[(FeW{{O}_{4}}).\]


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