Question

The correct option(s) related to the extraction of iron from its ore in the blast furnace operating in the temperature range 900-1500 K is (are):

Options

• Limestone is used to remove silicate impurity.

• Pig iron obtained from blast furnace contains about 4% carbon.

• Coke (C) converts CO₂ to CO.

• Exhaust gases consist of NO₂ and CO.

Answer 1

Limestone is used to remove silicate impurity, pig iron obtained from blast furnace contains about 4% carbon and coke (C) converts CO₂ to CO.