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Discussion :: Chemistry

  1. Which one of the following is not present in cement ?

  2. A.

     Clay

    B.

     Alumina

    C.

     Alum

    D.

     Gypsum

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    Answer : Option C

    Explanation :

    Gypsum is added in calculated quantity in order to adjust the rate of setting of cement. Alum is not present in cement.


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