In the extraction of iron using a blast furna | vedclass

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(C) In the extraction of iron from its ore (hematite,$Fe_2O_3$),the main impurity present is silica $(SiO_2)$,which is acidic in nature. To remove thi

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$SiO_2, CaCO_3$

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(C) In the extraction of iron from its ore (hematite,$Fe_2O_3$),the main impurity present is silica $(SiO_2)$,which is acidic in nature. To remove this acidic impurity,a basic flux,limestone $(CaCO_3)$,is added. Inside the blast furnace,$CaCO_3$ decomposes to form calcium oxide $(CaO)$,which reacts with $SiO_2$ to form a fusible slag,calcium silicate $(CaSiO_3)$. The reactions are: $CaCO_3 \rightarrow CaO + CO_2$ $CaO + SiO_2 \rightarrow CaSiO_3$ (slag). Thus,$X = SiO_2$ and $Y = CaCO_3$.

In the extraction of iron using a blast furnace,to remove the impurity $(X)$,chemical $(Y)$ is added to the ore. $X$ and $Y$ are respectively

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