Question

Aluminium is obtained by

• A. reducing $Al_2O_3$ with coke
• B. electrolysing $Al_2O_3$ dissolved in $Na_3AlF_6$
• C. reducing $Al_2O_3$ with chromium
• D. heating alumina with cryolite

Answer 1

Answer: (B)

electrolysing $Al_2O_3$ dissolved in $Na_3AlF_6$

Answer 2

Electrolytic reduction