Alumina with considerable impurity of silica is purified by ....... – InterviewSolution

1.	Alumina with considerable impurity of silica is purified by .......
Answer» Hall-Heroult process Hoope's process Serpeck's process Bayer's process SOLUTION :In Serpeck.s process, the silica is REDUCED to Si which volatises of at this TEMPERATURE. The reduction is CARRIED out by carbon. `SiO_2 + 2C to Si + 2CO`

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