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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 :

    Explanation Not Provided

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