(a) Name the chief ore of iron. Write its formula.
(b) How is an iron ore concentrated? Describe it briefly.
(c) Draw a labelled diagram of the blast furnace used in the extraction of iron from its concentrated ore.
OR
(a) Draw a labelled diagram of ‘Frasch process’ used for extracting sulphur.
(b) State the principle involved in the extraction of sulphur directly out of the ground.
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Answer: The chief ore of iron is hematite, and it is an oxide.
The oxide of iron is also a mineral and has the formula Fe2O3.
The extraction process of iron (Fe) is done in part by part, and they are more concentration, roasting or calculations, or reduction through the process and finally ore concentration.
Then the resulting material is fed in the blast furnace to make iron bars or other shapes.
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