Other questions in this quiz

2. What are the three raw materials in the blast furnace?

  • Iron oxide, limestone, water
  • Iron oxide, coke, limestone
  • Iron oxide, coke, carbon
  • Iron oxide, water, carbon dioxide

3. Isotopes have a different number of what?

  • Electrons
  • Electron shells
  • Neutrons
  • Protons

4. Moles= ???

  • Mass x atomic number
  • Mass/ Mr
  • Mr/mass
  • Mass x Mr

5. Why is cryolite added in the extraction of aluminium?

  • It raises the melting point
  • It lowers the melting point
  • It looks pretty
  • It speeds up the reaciton
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