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Among the following the main reactions occurring in the blast furnaces during the extraction of iron from haematite are
i) ${Fe}_{2} O_{3} + 3 CO \to 2 Fe + 3 {CO}_{2}$ .
ii) $FeO + {SiO}_{2} \to {FeSiO}_{3}$
iii) ${Fe}_{2} O_{3} + 3 C \to 2 Fe + 3 CO$
iv) $CaO + {SiO}_{2} \to {CaSiO}_{3}$

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iii and iv

i and ii

ii and iii

i and iv

answer is D.

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Detailed Solution

The reaction that occurs in a blast furnace are:

${Fe}_{2} O_{3} + 3 CO \to 2 Fe + 3 {CO}_{2}$

$CaO + {SiO}_{2} \to {CaSiO}_{3}$

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