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  1. Slag is a name given for

    2. A.

     Molten iron
    B.

     Molten sand
    C.

     Molten alumina
    D.

     Molten calcium silicate

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    Answer : Option C

    Explanation :

    Slag is a partially vitreous by-product of the process of smelting ore, which separates the desired metal fraction from the unwanted fraction. A good example is steelmaking slag: quicklime and magnesite are introduced for refractory protection, neutralizing the alumina and silica separated from the metal, and assist in the removal of sulfur and phosphorus from the steel.

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