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Heating of ore in the absence of air below its melting point is called

$ (a)\;\text{Leaching} \\(b)\;\text{Roasting} \\(c)\;\text{Smelting} \\ (d)\;\text{Calcination} $
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Heating of ore in the absence of air below its melting point is called Calcination.
Hence d is the correct answer.
answered Mar 18, 2014 by meena.p
 

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