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  • 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

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

Answers (1)

The answer is the option (i, ii). Oxides reduction can be done by using carbon. Haematite (Iron ore - \text {Fe}_{2}\text {O}_{3}  ) and calamine  \text {ZnCO}_{3}\rightarrow \text {ZnO}+\text {CO}_{2} contain oxygen, so they can be reduced by carbon.

Sulphide ores cannot be reduced by carbon. Iron pyrite and sphalerite are sulphide ores of iron and zinc respectively.

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