Chemical Reaction
Chemical Reaction
#### Which of the following is a displacement reaction?
1. [ ] The reaction of iron with oxygen
2. [ ] The reaction of magnesium with hydrochloric acid
3. [ ] The reaction of zinc with sulfuric acid
4. [x] The reaction of copper with silver nitrate
#### Magnesium ribbon is rubbed before burning because it has a coating of:
1. [ ] Basic magnesium carbonate
2. [x] Basic magnesium oxide
3. [ ] Basic magnesium sulphide
4. [ ] Basic magnesium chloride
#### Oxidation is a process which involves:
1. [x] Addition of oxygen
2. [ ] Addition of hydrogen
3. [ ] Removal of oxygen
4. [ ] Removal of hydrogen
#### The process of reduction involves:
1. [ ] Addition of oxygen
2. [x] Addition of hydrogen
3. [ ] Removal of oxygen
4. [ ] Removal of hydrogen
#### Give the ratio in which hydrogen and oxygen are present in water by volume.
1. [ ] 1:2
2. [ ] 1:1
3. [x] 2:1
4. [ ] 1:8
