Question:
Electrolytic reduction of alumina is done by the ________ Process
Electrolytic reduction of alumina is done by the ________ Process
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Hall-Heroult = Electricity + Alumina. It is how we get almost all the world's new aluminium.
Updated On: Jul 4, 2026
- Hoope's
- Hall and Heroult
- Bayer's
- Harris
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The Correct Option is B
Solution and Explanation
Step 1: Concept Alumina ($Al_{2}O_{3}$) has a very high melting point and cannot be reduced by carbon at reasonable temperatures.
Step 2: Meaning The reduction is achieved through electrolysis in a molten salt bath.
Step 3: Analysis
Hoope's process is for refining aluminium. Bayer's process is for refining the ore. The Hall-Heroult process uses a cryolite electrolyte to dissolve alumina for electrolytic reduction.
Step 4: Conclusion Therefore, the Hall-Heroult process is the industrial method for reducing alumina to aluminium. Final Answer: (B)
Step 2: Meaning The reduction is achieved through electrolysis in a molten salt bath.
Step 3: Analysis
Hoope's process is for refining aluminium. Bayer's process is for refining the ore. The Hall-Heroult process uses a cryolite electrolyte to dissolve alumina for electrolytic reduction.
Step 4: Conclusion Therefore, the Hall-Heroult process is the industrial method for reducing alumina to aluminium. Final Answer: (B)
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