1. | Ethane (C2H6 ) on complete combustion gave CO2 and water. It shows that the results are in accordance with the law of conservation of mass. Then, the coefficient of oxygen is equal to ? | |
2. | In an electrolytic cell where electrolysis is carried, anode has ? | |
3. | In which of the following chemical equations the abbreviations represent the correct states of the reactants and Products involved at reaction temperature ? | |
4. | What type of chemical reactions take place when electricity is passed through water ? | |
5. | A substance ‘X’ is used in white-washing and is obtained by heating limestone in the absence of air. Identify ‘X’ ? | |
6. | Electrolysis of water is a decomposition reaction. The molar ratio of hydrogen and oxygen gases liberated during electrolysis of water is Problems ? | |
7. | Which one of the following processes involve chemical reactions ? | |
8. | Which one of the following processes involve chemical reactions ? | |
9. | The brown gas evolved on heating of copper nitrate is ? | |
10. | MnO2 + 4HCl -> MnCl2 + H2O + Cl2 The oxidising agent is ? | |