Which of the following reaction occurs during smelting in the blast furnace at the lowest temperature in the extraction of iron.

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CaO+SiO2→CaSiO3

Fe2O3+3C→2Fe+3CO

3Fe2O3+CO→2Fe3O4+CO2

CO2+C→2CO

answer is C.

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Detailed Solution

At 500ºC the reaction taking place in the blast furnace is as follows3Fe2O3+CO→2Fe3O4+CO2

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