Chemistry
Substance which helps to lower the fusion point of the mixture in Hall Heroult Process:
- Coke
- Concentrated sodium hydroxide
- Fluorspar
- Concentrated potassium hydroxide
Metallurgy
ICSE 2022
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Answer
Fluorspar
Reason — Fluorspar lowers the fusion point of the mixture in Hall Heroult Process and the mixture fuses at 950° C instead of 2050° C.
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