When hot air is blown in the mixture of pig iron, iron scrap, coke, is formed.
(a) wrought iron. (b) cast iron (c) malleable iron (d) all of these
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Pig iron is produced by smelting or iron ore in blast furnaces or by smelting ilmenite in electric furnaces. ... The term “pig iron” dates back to the time when hot metal was cast into ingots before being charged to the steel plant. The moulds were laid out in sand beds such that they could be fed from a common runner.
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I think the answer is all of these
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