Choose the option that best completes the underlined part of the sentence.

Extracting pure aluminum from bauxite and other ores using the Hall-Héroult process, where a vast amount of electrical energy separates the element from aluminum oxide, making aluminum an energy-dense resource with a huge carbon footprint.

Title

Extracting pure aluminum

Your Result

Correct

Difficulty

Hard

Your Pace

0:08

Others' Pace

1:29

Submit Answer
Learn More
Question 1 of 1