Other questions in this quiz

2. Why is Titanium not extracted by carbon?

  • Its too expensive to use
  • It forms titanium Carbide which makes it brittle
  • It's activation energy's too high
  • It's more reactive

3. Equation at the Cathode

  • Al2+ + 2e- → Al
  • Al3+ + 2e- → Al
  • Al3+ + 3e- → Al
  • 2O2- → O2 + 4e-

4. Disadvantage of using carbon to extract iron, copper and manganese

  • Produces CO2 which is a greenhouse gas
  • Very expensive
  • Time consuming
  • Gives metals impurities

5. How is extracted Tungsten from its Ore?

  • Electrolysis
  • Reduction of Oxygen
  • Reduction by Hydrogen
  • Reduction by Carbon

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