1.

In blast furnace, iron oxide is reduced by

Answer»

hot blast of air
CARBON monoxide
carbon
silica

Solution :`3Fe_(2)O_(3)+COoverset(300-400^(@)C)to2Fe_(3)O_(4)+CO_(2)`
`Fe_(3)O_(4)+COoverset(500-600^(@)C)to3FeO+CO_(2)`
`FeO+COoverset(700^(@)C)toFe+co_(2)`
Iron formed is called spongy iron. In the reduction reactions heat is also evolved which DECOMPOSES a PART of carbon monoxide into carbon
`2COunderset(iron)overset(hot spongy)toCO_(2)+C`


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