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    Composition percentage of CaO and SiO2 in Portland cement is -
    Question

    Composition percentage of CaO and SiO2 in Portland cement is -

    A.

    40 - 45 % and 10 - 15 %

    B.

    85 - 90 % and 40 - 45 %

    C.

    60 - 68 % and 17 - 24 %

    D.

    3 - 10 % and 80 - 90 %

    Correct option is C

    Composition percentage of CaO and

    in Portland cement is 60 – 68 % and 17 – 24%

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