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  1. The compressive strength of cement should not be less than about 110Kg/cm² after three days & not less than 170Kg/cm² after seven days. The fineness of an ordinary cement as determined by turbidimetric method should be about __________ cm²/gm.

    2. A.

     800
    B.

     1600
    C.

     4000
    D.

     8500

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    Answer : Option B

    Explanation :

    Explanation Not Provided

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