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प्रश्न
During the concentration of bauxite ore, aluminium goes in ______ (soluble/insoluble) part because of its ______ (acidic/basic/amphoteric) nature.
रिक्त स्थान भरें
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उत्तर
During the concentration of bauxite ore, aluminium goes in soluble part because of its amphoteric nature.
Explanation:
During Bayer’s process, bauxite ($$\mathrm{Al_2O_3 \cdot 2H_2O}$$) dissolves in concentrated NaOH because aluminium oxide is amphoteric, while insoluble impurities remain as red mud.
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अध्याय 7: Metallurgy - MISCELLANEOUS EXERCISE [पृष्ठ १४७]
