Isolation of Elements

Section: Chemistry

Question : 6 of 22

Marks: +1, -0

Which among the following statement(s) is(are) true for the extraction of aluminium from bauxite?

[JEE Adv 2020 P2]

Hydrated Al2O3 precipitates, when CO2 is bubbled through a solution of sodium aluminate
Addition of Na3AlF6 lowers the melting point of alumina
CO2 is evolved at the anode during electrolysis
The cathode is a steel vessel with a lining of carbon

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