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  1. The proportions of charcoal, saltpetre and sulphur in gun powder by weight, are respectively:

    2. A.

    15, 75, 10
    B.

    75, 10, 15
    C.

    10, 15, 75
    D.

    10, 75, 15.

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    Answer : Option A

    Explanation :

    No answer description available for this question

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