Aluminium ion is produced by which of the following?

Correct option is C

Aluminium ions (Al³⁺) are primarily produced through the process of electrolysis during the extraction of aluminium from its ore, bauxite. This process, known as the Hall-Héroult process, involves dissolving aluminium oxide (Al₂O₃) in molten cryolite (Na₃AlF₆) to lower its melting point. When an electric current is passed through the mixture, aluminium ions are reduced at the cathode to form pure aluminium metal. Electrolysis is a controlled industrial process and is not associated with pollution sources like CFCs, smog, or general environmental contamination.

Key Points:

● The process requires aluminium oxide dissolved in cryolite as an electrolyte.
● Electrolysis involves the reduction of Al³⁺ ions at the cathode to produce aluminium metal.
● It is an energy-intensive process but crucial for large-scale aluminium production.

Additional Knowledge:

• (a) CFCs: Chlorofluorocarbons are pollutants that cause ozone depletion 
• (b) Smog: A mixture of smoke and fog, associated with air pollution