Year :
2010
Title :
Chemistry
Exam :
WASSCE/WAEC MAY/JUNE
Paper 1 | Objectives
21 - 30 of 38 Questions
| # | Question | Ans |
|---|---|---|
| 21. |
The following substances are normal salts except A. AI(NO3)3 B. FeSO4 C. Mg(OH)NO3 D. NaCI |
C |
| 22. |
Which of the following chlorides is insoluble in water? A. AgCI B. KCI C. NH4CI D. ZnCI2 |
A |
| 23. |
Which of the following factors would not affect the solubility of a gas? A. Concentration B. Nature of solvent C. Pressure D. Temperature |
A |
| 24. |
Consider the equilibrium reaction represented by the following equation: 2SO2(g) + O2(g) ⇌ 2SO3(g); ∆H = 395.7 kJmol-1 Which of the following statements about the equilibrium system is correct? A. Addition of catalyst changes the equailibrium position B. Decrease in pressure increase in temperature SO3 C. Decrease in pressure increases the equilibrium concentration of O2 D. Increase in temperatur favours the forward reaction |
C |
| 25. |
The rate of chemical reaction of solids are not affected by A. catalyst B. pressure C. particle size D. temperature |
B |
| 26. |
Which of the following statements about the cell notation Mg/Mg2+//Cu2+/Cu is correct? A. copper is the anode B. Manesium is reduced C. Magnesium is the anode D. The double line represents the electrodes |
B |
| 27. |
Which of the following statements about the electrolysis of CuSO4(aq) using copper cathode and platinum anode is not correct? A. Copper is deposited at the cathode B. Oxygen is liberated at the anode C. it is used for the purification of copper D. The solution becomes acidic |
C |
| 28. |
What is the change in oxidation number of manganes in the reaction represented by the following equation? MnO-4(aq) + 8H+(aq) + 5e- → Mn2+(aq) + 4H2O(l) A. +3 to + 2 B. + 4 to + 2 C. + 5 to + 2 D. + 7 to 2 |
D |
| 29. |
The quantity of electricity required to discharge 1 mole of univalent ion is A. 9,600 C B. 48,250 C C. 96,500 C D. 193,00 C |
C |
| 30. |
Fact and oils are used as raw materials in the following industries except A. paint industry B. plastic industry C. margarine industry D. cosmetics industry |
B |
| 21. |
The following substances are normal salts except A. AI(NO3)3 B. FeSO4 C. Mg(OH)NO3 D. NaCI |
C |
| 22. |
Which of the following chlorides is insoluble in water? A. AgCI B. KCI C. NH4CI D. ZnCI2 |
A |
| 23. |
Which of the following factors would not affect the solubility of a gas? A. Concentration B. Nature of solvent C. Pressure D. Temperature |
A |
| 24. |
Consider the equilibrium reaction represented by the following equation: 2SO2(g) + O2(g) ⇌ 2SO3(g); ∆H = 395.7 kJmol-1 Which of the following statements about the equilibrium system is correct? A. Addition of catalyst changes the equailibrium position B. Decrease in pressure increase in temperature SO3 C. Decrease in pressure increases the equilibrium concentration of O2 D. Increase in temperatur favours the forward reaction |
C |
| 25. |
The rate of chemical reaction of solids are not affected by A. catalyst B. pressure C. particle size D. temperature |
B |
| 26. |
Which of the following statements about the cell notation Mg/Mg2+//Cu2+/Cu is correct? A. copper is the anode B. Manesium is reduced C. Magnesium is the anode D. The double line represents the electrodes |
B |
| 27. |
Which of the following statements about the electrolysis of CuSO4(aq) using copper cathode and platinum anode is not correct? A. Copper is deposited at the cathode B. Oxygen is liberated at the anode C. it is used for the purification of copper D. The solution becomes acidic |
C |
| 28. |
What is the change in oxidation number of manganes in the reaction represented by the following equation? MnO-4(aq) + 8H+(aq) + 5e- → Mn2+(aq) + 4H2O(l) A. +3 to + 2 B. + 4 to + 2 C. + 5 to + 2 D. + 7 to 2 |
D |
| 29. |
The quantity of electricity required to discharge 1 mole of univalent ion is A. 9,600 C B. 48,250 C C. 96,500 C D. 193,00 C |
C |
| 30. |
Fact and oils are used as raw materials in the following industries except A. paint industry B. plastic industry C. margarine industry D. cosmetics industry |
B |