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General Principles & Processes of Isolation of Elements — Hard (Advanced NEET Level)
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Question 1
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1
Hall-Heroult uses electrolysis; blast furnace uses chemical reduction
2
Both use carbon-based technology — carbon anodes in Hall-Heroult, coke in blast furnace
3
Both produce slag — CaSiO3 in blast furnace, Na3AlF6 in Hall-Heroult
4
CO is the primary reductant in blast furnace; electricity provides reducing power in Hall-Heroult
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