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Discussion :: UPSC Civil Service Exam Questions

  1. Consider the following oxides :
    1. Al2O3
    2. CaO
    3. SiO2
    The correct sequence in increasing order of their percentage in an ordinary portland cement is

    2. A.
    2, 1, 3
    B.
    1, 3, 2
    C.
    3, 1, 2
    D.
    1, 2, 3

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    Answer : Option B

    Explanation :

    No answer description available for this question. Let us discuss.

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