(A) In the extraction of iron from haematite $(Fe_2O_3)$,the main impurity present is silica $(SiO_2)$,which is acidic in nature.To remove this acidic

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(A) In the extraction of iron from haematite $(Fe_2O_3)$,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.At high temperatures,$CaCO_3$ decomposes to form $CaO$ $(CaCO_3 \rightarrow CaO + CO_2)$.The $CaO$ (flux) reacts with $SiO_2$ (impurity) to form calcium silicate $(CaSiO_3)$,which is known as slag.Thus,$x = SiO_2$ and $y = CaSiO_3$.

Class 12 Chemistry General Principles and Processes of Isolation of Elements Reduction to free Metal

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In the extraction of iron from haematite,the impurity $(x)$ of the ore is removed in the form of '$y$'. What are $x$ and $y$ respectively?

AP EAMCET 2025 All AP EAMCET

A
$SiO_2, CaSiO_3$
B
$CaO, CaSiO_3$
C
$SiO_2, FeSiO_3$
D
$P_2O_5, Ca_3(PO_4)_2$

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General Principles and Processes of Isolation of Elements

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Reduction to free Metal

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In the extraction of iron from haematite,the impurity $(x)$ of the ore is removed in the form of '$y$'. What are $x$ and $y$ respectively?

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$4M + 8CN^{-} + 2H_2O + O_2 \rightarrow 4[M(CN)_2]^{-} + 4OH^{-}$
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