Which is the principal reducing agent in a blast furnace?
A) CaO(s)
B) CaSiO3(l)
C) CO(g)
D) O2(g)
E) CO2(g)
Correct Answer:
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Q12: In the Hall process, _ is reduced
Q13: Which of these reactions represents the removal
Q17: The most common source for the commercial
Q18: Which one of these normally would not
Q20: What elements are alloyed to make stainless
Q24: The debris accompanying a mineral is called
A)slag.
B)gangue.
C)ore.
D)halite.
E)ash.
Q27: Hydrometallurgy uses _ to separate a metal
Q28: Pyrometallurgy uses _ to separate a metal
Q29: The process that selectively extracts a metal
Q42: Electrolysis is used as the last step
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