A. NH3 CO and CO2
B. CO and C
C. N2, CO and CO2
D. NH3 and CO
Correct Answer:
Option C – N2, CO and CO2
Explanation
The N2 from the hot air blast to burn the coke (48%), the CO (23%) and CO2 (21%) produced from the reduction of the iron ore Fe2O3 by carbon (the coke) are the major components of the waste from the extraction.