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Question
For the metallurgical process of which of the ores calcined ore can be reduced by carbon?
(i) Haematite
(ii) Calamine
(iii) Iron pyrites
(iv) Sphalerite
Solution
(i) Haematite
(ii) Calamine
Explanation:
Oxides can be reduced by using carbon. Haematite \[\ce{(Fe2O3)}\] and calamine \[\ce{(ZnCO3 -> ZnO + CO2)}\] can be reduced by carbon.
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