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Metallurgy of Fe is carried in Blast fu...

Metallurgy of `Fe ` is carried in Blast furnace. Blast furnace is divided in following zones.
`a.` Combustion zone `b.` Fusion zone
`c.` Reduction zone `d.` Preheating zone
At `350^(@)C` which of the reaction is better reducing agent ?

A

`C+O_(2)toCO_(2)`

B

`CO+(1)/(2)O_(2)toCO_(2)`

C

`C+(1)/(2)O_(2)toCO`

D

`CO_(2)+Cto2CO`

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