Chemistry 0620 · IGCSE · Extraction of metals

Extraction of metals — practice question

Iron is obtained from hematite in the blast furnace. Hematite contains silicon(IV) oxide (sand) as an impurity. What substance reacts with this impurity to remove it?

Acalcium oxide
Bcarbon
Ccarbon dioxide
Dslag

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

Full mark scheme, point by point
Step-by-step worked solution
Write your answer & get it marked instantly by AI