Chemistry 5070 · O Level · Extraction of metals

Extraction of metals — practice question

Which reaction occurs in the blast furnace?

  • A$\text{FeCr}_2\text{O}_4 + 4\text{C} \rightarrow \text{Fe} + 2\text{Cr} + 4\text{CO}$
  • B$3\text{Fe} + 4\text{H}_2\text{O} \rightarrow \text{Fe}_3\text{O}_4 + 4\text{H}_2$
  • C$\text{SiO}_2 + \text{CaO} \rightarrow \text{CaSiO}_3$
  • D$\text{SiO}_2 + 2\text{NaOH} \rightarrow \text{Na}_2\text{SiO}_3 + \text{H}_2\text{O}$

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