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5. ? is not a changing process in metal smelting. A. Iron smelting in a furnace B. Heating iron in oxygen C. Metal oxide reacting with coke at high temperature D. Carbon monoxide reducing metal oxide at
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5. ? is not a changing process in metal smelting.

A. Iron smelting in a furnace
B. Heating iron in oxygen
C. Metal oxide reacting with coke at high temperature
D. Carbon monoxide reducing metal oxide at high temperature.​

User Sparklyllama
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9 votes
C. Metal oxide reacting with coke in a high temperature because I don’t think it reacts with coke during metal smelting (not 100% sure though)
User PalashV
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