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Banking Chemistry Some Important Man-Made Materials Question Bank Some Important Man-Made Materials

  • question_answer
    Given below is an approximate composition of a substance: \[CaO\]              60-70% \[Si{{O}_{2}}\]                         20-25% \[A{{l}_{2}}{{O}_{3}}\]                       5-10% \[F{{e}_{2}}{{O}_{3}}\]                      2-3% The substance is

    A)  plaster of Paris              

    B)  cement  

    C)  marble stone                

    D)  quartz

    Correct Answer: B

    Solution :

     Cement is made up of calcium oxide, silicon dioxide, aluminium tetra oxide and iron tetra oxide.


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