Chemistry · 2020
JEE Main · 8 January 2020, Shift 2 · Q33
Among the reactions (a) - (d), the reaction(s) that does/do not occur in the blast furnace during the extraction of iron is/are: (a) CaO + SiO_2 →…
Among the reactions (a) - (d), the reaction(s) that does/do not occur in the blast furnace during the extraction of iron is/are :
(a)
$\displaystyle \mathrm{CaO}+\mathrm{SiO}_2 \rightarrow \mathrm{CaSiO}_3$
(b)
$\displaystyle 3 \mathrm{Fe}_2 \mathrm{O}_3+\mathrm{CO} \rightarrow 2 \mathrm{Fe}_3 \mathrm{O}_4+\mathrm{CO}_2$
(c)
$\displaystyle \mathrm{FeO}+\mathrm{SiO}_2 \rightarrow \mathrm{FeSiO}_3$
(d)
$\displaystyle \mathrm{FeO} \rightarrow \mathrm{Fe}+\frac{1}{2} \mathrm{O}_2$
Official answer
(3)
(c) and (d)
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JEE Main 2020 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.