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10th Class Science Metals and Non-metals / धातु और अधातु Question Bank Metals and Non-metals

  • question_answer
    Which of the following is used as flux in the extraction of iron?

    A) Limestone                         

    B) Silica                    

    C) Flint                                     

    D) Feldspar                             

    Correct Answer: A

    Solution :

    Limestone decomposes to give \[\text{CaO}\] which combines with silica forming \[CaSi{{O}_{3}}\](slag). Hence, lime stone is used as a flux in the extraction of iron.


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