Q.

The slag formed in the blast furnace during the extraction of iron from haematite is

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a

Na2SiO3

b

CaCO3

c

CaSiO3

d

FeSiO3

answer is C.

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Detailed Solution

Lime stone is flux introduced into blast furnace during the extraction of iron from haematite. The gangue present is SiO2.  CaOFlux+SiO2gangue→CaSiO3Slag
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The slag formed in the blast furnace during the extraction of iron from haematite is