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Calcination and Roasting...

Calcination and Roasting

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The end product of both the processes is oxide of metal.
(ii) Volatile impurities are removed from the ore and surface area for the further reaction increases.
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Difference between calcination & roasting

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From the list of terms given, choose the most appropriate term to match the given description. (calcination, roasting, pulverisation, smelting) 1. Crushing of the ore into a fine powder. 2. Heating of the ore in the absence of air to a high temperature.

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Define calcination and write its purpose.