@Which one of the following is most easily reduced by heating in a stream of hydrogen?
Copper II oxide
Aluminium oxide
Iron oxide

@Which one of the following reactions shows oxidation?
Zn(s)  Zn(aq)
Cl(g)  2Cl(aq)
CuO(s)  H(g)

@Which reducing agent is used to make iron from iron ore?
Carbon monoxide
Carbon dioxide
Calcium carbonate

@For Zn + CuO  ZnO + Cu which of the following statements is correct?
Copper atoms lose 2 electrons
Zinc is oxidised
Copper is reduced

@When metal ions are discharged at the cathode during electrolysys the process is called:
Reduction
Oxidation
Hydration

@For CuO + H  Cu + HO which of the following statements is correct?
Copper oxide is an oxidising agent
Hydrogen is an oxidising agent
This is not a redox reaction

@An example of oxidation includes:
The rusting of iron
Heating Ammonium chloride
Dissolving Calcium carbonate in water

@Which one of the following changes is oxidation?
CuO  CuO
N  NH
FeCl  FeCl

@Copper II oxide reacts with hydrogen to form copper and water. The copper II oxide is:
Reduced
Oxidised
Neutralised

@When iron is burnt in oxygen it is oxidised to form:
FeO
FeO
FeO