Chemistry
The compound that is not a constituent of the electrolytic mixture used in the Hall-Heroult's process is:
- Al2O3
- NaAlO2
- Na3AlF6
- CaF2
Metallurgy
ICSE 2024
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Answer
NaAlO2
Reason — In the standard Hall-Heroult process, the electrolytic mixture consists of 20% alumina (Al2O3), 60% cryolite (Na3AlF6) and 20% fluorspar (CaF2). Hence, NaAlO2 is not a part of the electrolytic mixture.
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