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

  • question_answer
    Raw materials used for the manufacture of Portland cement are

    A)  gypsum and limestone

    B)  limestone and clay  

    C)  alumina, clay and gypsum

    D)  gypsum and clay

    Correct Answer: B

    Solution :

    Not Available


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