The process to heat the ore in the presence of excess supply of air below its melting point is called as ________.

roasting

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calcination

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smelting

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liquation

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Solution

The correct option is D roasting
Roasting is a metallurgical process involving gassolid reactions at elevated temperatures with the goal of purifying the metal components. In roasting, the ore or ore concentrate is treated with very hot air below the melting point of the metal.

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