The main reaction(s) which occur(s) in blast furnace during extraction of iron from haematite is(are):

Q. The equations of the production of iron in the blast furnace are given. Answer the following questions.
$C+O_2\to C{O}_2$
$C{O}_2+C\to 2CO$
$CaC{O}_3\to CaO+C{O}_2$
$CaO+Si{O}_2\to CaSi{O}_3$
$F{e}_2{O}_3+3CO\to 2Fe+3C{O}_2$
Which is the main impurity found in haematite ? Which substances is used to remove the gangue ?

Q. The equations of the production of iron in the blast furnace are given. Answer the following questions.
$C+O_2\to C{O}_2$
$C{O}_2+C\to 2CO$
$CaC{O}_3\to CaO+C{O}_2$
$CaO+Si{O}_2\to CaSi{O}_3$
$F{e}_2{O}_3+3CO\to 2Fe+3C{O}_2$
Write the chemical equation of the formation of slag in blast furnace.

Q. Given below are the different temperature reactions and products during extraction of iron in blast furnace.
P. 900 K 1. $F{e}_2{O}_3+3C\to 2Fe+3CO$
Q. 1200 K 2. $CaC{O}_3\to CaO+C{O}_2$
R. 1500 K 3. $2C+O_2\to 2CO$
S. 2000 K 4. $F{e}_2{O}_3+3CO\to 2Fe+3C{O}_2$
Find the correct match.

Q. Among the reactions (A) - (D), the reaction(s) that does/do not occur in the blast furnace during the extraction of iron is/are:
$\left(A\right)CaO+Si{O}_2\to CaSi{O}_3$
$\left(B\right)3F{e}_2{O}_3+CO\to 2F{e}_3{O}_4+C{O}_2$
$\left(C\right)FeO+Si{O}_2\to FeSi{O}_3$
$\left(D\right)FeO\to Fe+\frac{1}{2}{O}_2$

Q.

The main reactions occurring in the blast furnace during extraction of iron from haematite are ________.