1.

Which of the following processes involve the roasting process ?A. `ZnCO_(3) to ZnO + CO_(2)`B. `Fe_(2)O_(3) + 3C to 2Fe + 3CO`C. `2PbS + 3O_(2) to 2PbO + 2SO_(2)`D. `Al_(2)O_(3).2H_(2)O to Al_(2)O_(3) + 2H_(2) O`

Answer» Correct Answer - C
Roasting involves heating the ore strongly in presence of excess of air `(O_(2))`.


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