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The purest form of iron is prepared by o...

The purest form of iron is prepared by oxidising impurities from cast iron in a reverberatory furnace. Which iron ore is used to line the furnace? Explain by giving reaction.

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(a) Haematite `(Fe_(2)O_(3))` ore is used to line the furnance.
(b) `underset("lining")underset("Haematite")(Fe_(2)O_(3))+underset("(present in cast iron)")underset("Impurities")(3C) to underset("iron") underset("Wrought")(2Fe)+3CO`
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