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Write down the reaction taking place in blast furnance related to the metallurgy of iron in the temperature range 500-800 K.

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The correct Answer is:
`3Fe_(2)O_(3) +CO rarr 2Fe_(3)O_(4) +CO_(2)`
`Fe_(3)O_(4) +4CO rarr 3Fe +4CO_(2)`
`Fe_(2)O_(3) +CO rarr 2FeO + CO_(2)`
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