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Before introducing FeO in blast furance,...

Before introducing `FeO` in blast furance, it is converted to `Fe_(2)O_(3)` by roasting so that

A

it may not be removed as slag with silica

B

it may not evaporate in the furncae

C

Presence of it mauy increase the m.ot. Of charge

D

None of these

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The correct Answer is:
A
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