In the extraction of iron, the waste gas from the furnace is a mixture of
- PH3 CO and CO2
- CO and C
-
N2 , CO and CO2
- PH3 and CO
The correct answer is: C
Explanation
the \(N_2\) from the hot air blast to burn the coke (48%), the \(CO\) (23%) and \(CO_2\) (21%) produced from the reduction of the iron ore \(Fe_{2}O_{3}\) by carbon (the coke) are the major components of the waste from the extraction.
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