Multiple choice

Which of the following is the process in which a carbonate ore is heated strongly in the absence of air to convert it into metal oxide?

  1. Calcination

  2. Roasting

  3. Electrolysis

  4. None of these

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A Correct answer
Explanation

Calcination is the process of heating an ore strongly in the absence of air to convert carbonates into metal oxides. Roasting, by contrast, involves heating in the presence of excess air.