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(A) The process of extracting pure alumina $(Al_2O_3)$ from bauxite ore is known as the Bayer's process.In this process,bauxite is treated with a conc

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Bayer's method

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(A) The process of extracting pure alumina $(Al_2O_3)$ from bauxite ore is known as the Bayer's process.In this process,bauxite is treated with a concentrated solution of sodium hydroxide $(NaOH)$ at high pressure and temperature.This dissolves the alumina to form sodium aluminate,while impurities like silica,iron oxide,and titanium oxide remain as insoluble residues (red mud).The solution is then filtered,and the pure alumina is precipitated out.

Which method/process is used to obtain pure alumina from bauxite?

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