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  1. Heating of a ore below its melting point in the absence of air is known as

    2. A.

     Refining
    B.

     Calcination
    C.

     Roasting
    D.

     Smelting

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    Answer : Option B

    Explanation :

    Calcination is the process in which the ore is heated below its melting point in absence of air.

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