Correct Answer: Option A

Explanation

Iron ore is typically found with various impurities, with the main impurity being silicon dioxide (SiO\(_2\)). To remove silicon dioxide from iron ore, calcium oxide (CaO) is added to the blast furnace. This is a neutralization reaction because silicon dioxide is acidic and calcium oxide is basic.

                    CaO\(_{(s)}\)   +   (SiO\(_2\))\(_{(s)}\)   →   CaSiO\(_2\)\(_{(s)}\).

                        Base               Acid                     

There is an explanation video available below.

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