In the metallurgy of iron, when lime stone is added to blast furnace, calcium end up in :
A. Slag
B. Gangue
C. Metallic calcium
D. Calcium carbonate.

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1 Answers

Correct Answer - A
Lime stone `(CaCO_(3))` gives CaO upon heating. It acts as a basic fluxand combines with the impurity of sand `(SiO_(2))` to form `CaSiO_(3)` (slag) in the Blast furnace.

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