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Metals and Non-Metals — Science STD 10 — Question

Maharashtra BoardEnglish MediumSTD 10ScienceMetals and Non-Metals2 Marks
Question
How is aluminium metal extracted? Explain with the help of an equation.
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Answer

Aluminium metal is extracted by the electrolytic reduction (electrolysis) of molten aluminium oxide. When electric current is passed through molten aluminium oxide, it decomposes to form aluminium metal and oxygen gas.
$2\text{Al}_2\text{O}_3\text{(l)}\xrightarrow{\ \ \ \ \text{Electrolysis}\ \ \ }4\text{Al(s)}+3\text{O}_2\text{(g)}$

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