What are the electrodes made out of for the manufacture of aluminium by electrolysis?
Anode - Aluminium Cathode - Aluminium
Anode - Aluminium Cathode - Graphite
Anode - Graphite Cathode - Aluminium
Anode - Graphite Cathode - Graphite
Impure iron + Oxygen + Element X => Steel What is element X?
Calcium
Carbon
Nitrogen
Sulphur
Which statement is correct?
Aluminium is used in aircraft wings as it has a low density
Aluminium is used in food containers as it resists corrosion
Mild steel is used in car bodies as it has a high density
Stainless steel is used in cutlery as it does not rust
What are the conditions used to make steel from the iron produced in a blast furnace?
Calcium oxide (lime) + Oxygen + Heat
Calcium oxide (lime) + Oxygen + NO Heat
NO Calcium oxide (lime) + Oxygen + Heat
NO Calcium oxide (lime) + Oxygen + NO Heat
Which object is least likely to contain aluminium?
Bicycle frame
Hammer
Saucepan
Aeroplane body
Which statement about the extraction of iron from its ore is correct?
Iron is more difficult to extract than zinc
Iron is more difficult to extract than copper
Iron is easy to extract because it is a transition metal
Iron cannot be extracted by the reduction of crabon
