Question

Name the most common ore of the metal aluminium from which the metal is extracted. Write the chemical formula of the ore.

August 21, 2024

Answer

Bauxite [Al₂O₃.2H₂O]

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Metallurgy

Name the following : (i) A metallic ore converted to it’s oxide – iron [II] oxide on heating the concentrated ore.
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(iii) The compound which on ignition at elevated temperatures gives pure alumina.
(iv) The non-metal which forms the anode during electrolytic reduction of fused alumina in Hall Heroult’s process.
(v) A metal other than manganese, present in duralumin but not in magnalium.

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The metallic oxide reduced to metal generally by thermal decomposition.
(a) ZnO
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