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(a) Name the method by which aluminium metal is extracted.
(b) Give the name and chemical formula of one ore of copper.
(c) How is zinc extracted from its carbonate ore (calamine)? Explain with equations.
(a) Electrolytic reduction is the method used to extract aluminium metal.
(b) Copper glance (Cu2S) is an ore of copper.
(c) When calamine ore is heated strongly in the absence of air, it decomposes to form zinc oxide and carbon dioxide.
The equation is given as:
$ZnCO_3 → ZnO + CO_2$
The Zinc oxide is then heated with carbon and zinc metal is produced.
The equation is given as:
$ZnO + C → Zn + CO$
Updated on: 10-Oct-2022
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