A mixture of haematite, coke and limestone, on heating in blast furnace, gives molten iron metal. This is known as:
A
Smelting
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B
Calcination
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C
Roasting
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D
Liquation
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Solution
The correct option is B Smelting In the extraction of iron: Smelting is done in blast furnace, where a mixture of haematite, coke and limestone, on heating, gives molten iron metal. It is a combined term for the roasting, reduction and use of fluxes, all of which finally give iron, starting from its ore.