Other questions in this quiz

2. Disadvantages of using hydrogen to extract tungsten

  • Gives tungsten impurities
  • Produces CO2 which is a greenhouse gas
  • Very expensive and Hydrogen is highly expolsive
  • Takes a long time

3. How is extracted Tungsten from its Ore?

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

4. How the melting point of Aluminium Oxide is reduced?

  • Dissolving it in water
  • Reducing it with carbon
  • Dissolving Aluminium oxide in molten cryolite
  • Melting it

5. Name 3 metals extracted from their ores by reduction by Carbon

  • Titanium, Aluminium and copper
  • Copper, Iron, Aluminium
  • Iron, manganese and copper
  • Titanium, Tungsten and Aluminium


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