Limestone is added in the blast furnace (during pig iron manufacture)

1.	Limestone is added in the blast furnace (during pig iron manufacture) to
A.	form slag by combining with impurities.
B.	supply heat by undergoing exothermic reaction with impurities.
C.	reduce the coke consumption.
D.	reduce slag viscosity.
Answer» B. supply heat by undergoing exothermic reaction with impurities.

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Limestone is added in the blast furnace (during pig iron manufacture) to

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