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In the extractionof iron, slag is produced. Slag is

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In the extractionof iron, slag is produced. Slag is
A. CO
B. `FeSiO_3`
C. `MgSiO_3`
D. CaSiO_3`
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Correct Answer - D
In the extraction of iron, lime stone which acts as flux, decomposes at 1073 K to form CaO which then combines with silica to form slag.
`CaCO_3` `rarr^(1073 K)` CaO + `CO_2`
CaO + `SiO_2` `rarr` `CaSiO_3`
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