Calcium silicate (slag) formed in the slag formation zone is extractio – InterviewSolution

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1.	Calcium silicate (slag) formed in the slag formation zone is extraction of iron from haematite ore I. does not dissolve in molten iron II. being lighter floats on the moltern iron III. Is used in cement industry IV. prevents the re-oxidation of molten ironA. 1, 2B. 1, 3C. 1, 4D. `1, 2, 3, 4`
Answer» Correct Answer - D

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