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प्रश्न
Aluminium is extracted from its chief ore bauxite. The ore is first purified and then the metal is extracted from it by electrolytic reduction.
Name a chemicals used for dissolving aluminium oxide. In which state of sub-division is the chemical used?
टीपा लिहा
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उत्तर
Fluorspar and cryolite act as solvent. The percentage by weight composition is as follows:
Alumina - 20% by mass
Cryolite - 60% by mass
Fluorspar - 20% by mass
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