Consider the following statements Coke is one of the materials of the charge added to blast furnace ...........

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Consider the following statements:

Coke is one of the materials of the charge added to blast furnace for the production of steel/iron. Its function is to

1) Act as a reducing agent.

2) Remove silica associated with the iron ore.

3) Function as fuel, to supply heat.

4) Act as an oxidizing agent.

which Of these statements

1 and 2 are correct

2and 4 are correct

1 and 3 are correct

3 and 4 are correct

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Explanation:

Coke is added in blast furnance along with iron ore in a blast furnace. Coke being derived from fossil fuel by destructive distillation. Thus it contains higher percentage of carbon and have high calorific value that”s why it functions as a fuel to supply heat. Coke also acts as a reducing agent and reduce metal(iron) oxide to metal.
Chemical equations involved in process are following:
?    2C(s) + O2(g) ¾¾® 2CO(g)
?    FeO(s) + CO(g) ¾¾® Fe(s) + CO2(g)
?    Fe2O3 + 3CO(g) ¾¾® 2Fe(s) + 3CO2(g)