Question

carbon cannot be used for reduction of manganese oxide and chromium oxide how is the reduction done in these oxides

Answer 1

Metals of low reactivity can often be extracted from their ores by relatively simple methods. But what happens with metals from around the middle of the Reactivity Series? How do we obtain metals such as zinc, iron, or lead from their ores? In this unit you will see the important role that carbon plays in the extraction of these metals.
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