The limestone in the charge of a blast furnace decomposes to give lime and carbo

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Question
The limestone in the charge of a blast furnace decomposes to give lime and carbon dioxide. The lime thus obtained
Options
A. controls the grade of pig iron
B. acts as an iron-bearing mineral
C. supplies heat to reduce ore and melt the iron
D. forms a slag by combining with impurities

Correct Answer

forms a slag by combining with impurities

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Options
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A. amorphous material
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Options
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Options
A. soft and gives a coarse grained crystalline structure
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