Aluminium Extraction Quiz

What is the main topic of the video?

• Extraction of copper

• Extraction of aluminium

• Extraction of gold

• Extraction of iron

What material is the lining inside the steel case made of?

• Iron

• Copper

• Aluminium

• Graphite

What is the role of the cathode in the electrolysis setup?

• Positively charged part

• Neutral part

• None of the above

• Negatively charged part

What is the electrolyte in the aluminium extraction process?

• Purified aluminium oxide dissolved in water

• Purified aluminium oxide dissolved in cryolite

• Purified aluminium oxide dissolved in acid

• Purified aluminium oxide dissolved in salt

Which ions are present in the electrolyte?

• Aluminium 3+ and Oxygen 2-

• Aluminium 2+ and Oxygen 3-

• Aluminium 1+ and Oxygen 1-

• Aluminium 4+ and Oxygen 4-

What happens to the Al 3+ ions during electrolysis?

• They form a gas

• They remain in the solution

• They are attracted to the anode

• They are attracted to the cathode

What is formed at the anode during the electrolysis process?

• Nitrogen gas

• Hydrogen gas

• Oxygen gas

• Carbon dioxide

Why is cryolite used in the aluminium extraction process?

• To increase the melting point

• To increase the cost

• To decrease the melting point

• To decrease the purity

What happens to the anodes over time during the process?

• They remain unchanged

• They become stronger

• They change color

• They wear away

What is the main cost factor in the aluminium extraction process?

• Replacing the anodes

• Purchasing cryolite

• Transporting aluminium

• Generating heat energy