Chemistry - Metallurgy Question with Solution | TestHub
ChemistryMetallurgyExtraction of MetalsMedium2 minQB
ChemistryMediumsingle choice
In the metallurgy of aluminium, what is the function of coke powder in Hall-Heroult process :-
Options:
Answer:
D
Solution:
In the Hall-Heroult process, carbon anodes are used for electrolysis of molten alumina.
Coke powder is mixed with carbon anodes to increase their life and strength.
It forms a protective coating on the anode surface and prevents oxidation/corrosion of the anode by oxygen liberated during electrolysis.
Coke does not act as catalyst, reducing agent, or oxidising agent.
Correct Answer: (D) It prevents corrosion of anode
Stream:JEESubject:ChemistryTopic:MetallurgySubtopic:Extraction of Metals
⏱ 2mℹ️ Source: QB
Doubts & Discussion
Loading discussions...
