1.

Draw a neat diagram of blast furnance and describe and describe the reaction that occurs during extraction of cast iron in furnace at. (i) 600^(@)C (ii) 900^(@)C-1000^(@)C.

Answer»

Solution :(i) CARBON monoxide REDUCES ferric oxide to iron
`Fe_(2)O_(3)+3COrarr2Fe+3CO_(2)`
(ii) Calcium carbonate decomposes to calcium oxide and carbon dioxide
`CaCO_(3)rarrCaO+CO`
Calcium oxide converts sitica gangue into calcium silicate SLAG
`CaO+SiO_(2)rarrCaSiO_(3)`


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