Question

Purification of aluminium by electrolytic 'refining is carried out by :

• A. Hoope process
• B. Hall process
• C. Baeyer process
• D. Serperck process

Answer 1

The correct option is A Hoope process

Hoope's process is a metallurgical process used to obtain the aluminium metal of very high purity by electrolytic refining. In this process, aluminium ions from the fused mixture are discharged at the cathode as pure metal rises to the surface while impurities remain at the bottom. The aluminium metal obtained by this process is $99.98\%$ pure.