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Calcium silicate (slag) formed in the sl...

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 iron

A

I,II

B

I,III

C

I,IV

D

I,II,III,IV

Text Solution

Verified by Experts

The correct Answer is:
D
Slasg formed is not soluble in molten iron and hence floats on the layer of molten iron as separate layer. Slag layer is above molten iron and hence prevents reoxidation of molten iron. Slag van be easily removed iron. Slag can be easily removed from bottom of furnace and hence used in cement industry.
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