Home › CBSE Class 12 (Science) › Chemistry › General Principles and Processes of Isolation of Elements › In an iron blast furnace, silica impurity combin…
In an iron blast furnace, silica impurity combines with CaO to form what?
ACalcium silicate slag
BCalcium carbide dust
CIron silicide ore
DCalcium carbonate
Answer & Solution
Correct answer: A. Calcium silicate slag
Acidic silica reacts with basic CaO to make molten calcium silicate, which floats on the iron as slag.
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