Year :
2013
Title :
Chemistry
Exam :
JAMB Exam
Paper 1 | Objectives
11 - 20 of 44 Questions
| # | Question | Ans |
|---|---|---|
| 11. |
In a water body, too much sewage leads to A. a decrease in the temperature of the water which cause in death of aquatic animals B. an increase in the number of aquatic animals in the water C. an increase in the bacterial population which reduces the level of oxygen in the water D. a decrease in the bacterial population which increases the level of oxygen in the water |
|
| 12. |
10.0 dm3 of water was added to 2.0 mol dm-3 of 2.5dm3 solution of HCl. What is the concentration of the final solution in mol dm-3? A. 0.4 B. 8.0 C. 2.0 D. 0.5 |
|
| 13. |
Three drops of a 1.0 mol dm-3 solution of HCl was added to 20 cm3 of a solution of pH6.4. The pH of the resulting solution will be A. close to that of pure water B. less than 6.4 C. greater than 6.4 D. unaltered |
|
| 14. |
Which of the following substances is not a salt? A. Aluminium oxide B. Sodium hydrogentrioxosulphate (V) C. Sodium trioxocarbonate (V) D. Zinc chloride |
|
| 15. |
An insoluble salt can be prepared by A. the reaction of trioxocarbonate (V) with an acid B. double decomposition C. the action of dilute acid on an insoluble base D. the reaction of metals with an acid |
|
| 16. |
2H2O (l) + 2F2(g) → 4HF(aq) + O2(g). A. O2(g) B. H2O(l) C. F2(g) D. HF(aq) |
|
| 17. |
In an electrochemical cell, polarization is caused by A. chlorine B. oxygen C. tetaoxsulphate (Vl) acid D. hydrogen |
|
| 18. |
In an endothermic reaction, if there is a loss in entropy the reaction will A. be indeterminate B. be spontaneous C. not be spontaneous D. be at equilibrium |
|
| 19. |
The minimum amount of energy required for a reaction to take place is A. lattice energy B. ionization energy C. activation energy D. kinetic energy |
|
| 20. |
Which of the following compounds is a neutral oxide? A. Carbon (IV) oxide B. Sulphur (Vl) oixide C. Sulphur (IV) oxide D. Carbon (ll) oxide |
| 11. |
In a water body, too much sewage leads to A. a decrease in the temperature of the water which cause in death of aquatic animals B. an increase in the number of aquatic animals in the water C. an increase in the bacterial population which reduces the level of oxygen in the water D. a decrease in the bacterial population which increases the level of oxygen in the water |
|
| 12. |
10.0 dm3 of water was added to 2.0 mol dm-3 of 2.5dm3 solution of HCl. What is the concentration of the final solution in mol dm-3? A. 0.4 B. 8.0 C. 2.0 D. 0.5 |
|
| 13. |
Three drops of a 1.0 mol dm-3 solution of HCl was added to 20 cm3 of a solution of pH6.4. The pH of the resulting solution will be A. close to that of pure water B. less than 6.4 C. greater than 6.4 D. unaltered |
|
| 14. |
Which of the following substances is not a salt? A. Aluminium oxide B. Sodium hydrogentrioxosulphate (V) C. Sodium trioxocarbonate (V) D. Zinc chloride |
|
| 15. |
An insoluble salt can be prepared by A. the reaction of trioxocarbonate (V) with an acid B. double decomposition C. the action of dilute acid on an insoluble base D. the reaction of metals with an acid |
| 16. |
2H2O (l) + 2F2(g) → 4HF(aq) + O2(g). A. O2(g) B. H2O(l) C. F2(g) D. HF(aq) |
|
| 17. |
In an electrochemical cell, polarization is caused by A. chlorine B. oxygen C. tetaoxsulphate (Vl) acid D. hydrogen |
|
| 18. |
In an endothermic reaction, if there is a loss in entropy the reaction will A. be indeterminate B. be spontaneous C. not be spontaneous D. be at equilibrium |
|
| 19. |
The minimum amount of energy required for a reaction to take place is A. lattice energy B. ionization energy C. activation energy D. kinetic energy |
|
| 20. |
Which of the following compounds is a neutral oxide? A. Carbon (IV) oxide B. Sulphur (Vl) oixide C. Sulphur (IV) oxide D. Carbon (ll) oxide |