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| Q. |
The metal extracted from Bauxite is – |
| A. | Silver |
| B. | Copper |
| C. | Manganese |
| D. | Aluminum |
| Answer» D. Aluminum | |
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Explanation: Bauxite is an aluminium ore and is the main source of aluminium. Approximately 70% to 80% of the world's dry bauxite production is processed first into alumina, and then into aluminium by electrolysis as of 2010. Usually, bauxite ore is heated in a pressure vessel along with a sodium hydroxide solution at a temperature of 150 to 200 °C. At these temperatures, the aluminium is dissolved as an aluminate (the Bayer process). |
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