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  3. 10th Class
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10th Class Science Sample Paper Science Olympiad Model Test Paper-12

  • question_answer
    Which one of the following methods can be used for concentration of sulphide ore?

    A) Hydraulic Washing

    B) Froth Floatation

    C) Magnetic Separation

    D) Chemical Separation

    E) None of these

    Correct Answer: B

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