Year :
2005
Title :
Chemistry
Exam :
WASSCE/WAEC MAY/JUNE
Paper 1 | Objectives
11 - 20 of 37 Questions
| # | Question | Ans |
|---|---|---|
| 11. |
The activation energy of a reaction can be altered by A. adding a reducing agent B. applying a high pressure C. using a catalyst D. changing the temperature |
C |
| 12. |
Which of the following factors does not affect the rate of reaction of CaCO3 with HCI? A. temperature of the reaction B. solubility of the CaCO3 C. concentration of the HCI D. surface area of the CaCO3 |
B |
| 13. |
When X is heated with manganese (IV) oxide, oxygen is produced X is A. KCI B. KCIO3 C. CaCO3 D. ZnCO3 |
B |
| 14. |
Which of the following statements is not a postulate of the kinetic theory of gases? A. Molecules move with the same speed B. intermolecular forces are negligible C. Molecules are in a state of constant random motion D. collision between molecules is elastic |
A |
| 15. |
HNO3 does not usually react with metals to liberate hydrogen because HNO3 is A. a strong acid B. a corrosive acid C. an oxidizing agent D. a nitrating agent |
B |
| 16. |
Which of the following is not an acid anhydride? A. P 2O 5 B. NO 2 C. SO 2 D. CO |
D |
| 17. |
NaHCO3(s) can be distinguished from Na2CO3(s) by the action of A. dilute hydrochloric acid B. carbon (IV) oxide C. aqueous ammonia D. heat |
D |
| 18. |
What process is involved in the reaction represented by the following equation? AICI3 + 3H2O(l) → AI(OH) 3(s) + 3HCI(g) A. dehydration B. hydrolysis C. double decomposition D. Neutralization |
B |
| 19. |
A salt that absorbs moisture from the atmosphere without forming a solution is said to be A. efflorescent B. deliquescent C. hygroscopic D. insoluble |
C |
| 20. |
Consider the reaction represented by the equation below, xNH3(g) + yCI2(g) → zHCI(g) + N2(g) The values of x,y and z are respectively A. 2, 4, 6 B. 3, 2, 4 C. 2, 3, 6 D. 3, 2 6 |
C |
| 11. |
The activation energy of a reaction can be altered by A. adding a reducing agent B. applying a high pressure C. using a catalyst D. changing the temperature |
C |
| 12. |
Which of the following factors does not affect the rate of reaction of CaCO3 with HCI? A. temperature of the reaction B. solubility of the CaCO3 C. concentration of the HCI D. surface area of the CaCO3 |
B |
| 13. |
When X is heated with manganese (IV) oxide, oxygen is produced X is A. KCI B. KCIO3 C. CaCO3 D. ZnCO3 |
B |
| 14. |
Which of the following statements is not a postulate of the kinetic theory of gases? A. Molecules move with the same speed B. intermolecular forces are negligible C. Molecules are in a state of constant random motion D. collision between molecules is elastic |
A |
| 15. |
HNO3 does not usually react with metals to liberate hydrogen because HNO3 is A. a strong acid B. a corrosive acid C. an oxidizing agent D. a nitrating agent |
B |
| 16. |
Which of the following is not an acid anhydride? A. P 2O 5 B. NO 2 C. SO 2 D. CO |
D |
| 17. |
NaHCO3(s) can be distinguished from Na2CO3(s) by the action of A. dilute hydrochloric acid B. carbon (IV) oxide C. aqueous ammonia D. heat |
D |
| 18. |
What process is involved in the reaction represented by the following equation? AICI3 + 3H2O(l) → AI(OH) 3(s) + 3HCI(g) A. dehydration B. hydrolysis C. double decomposition D. Neutralization |
B |
| 19. |
A salt that absorbs moisture from the atmosphere without forming a solution is said to be A. efflorescent B. deliquescent C. hygroscopic D. insoluble |
C |
| 20. |
Consider the reaction represented by the equation below, xNH3(g) + yCI2(g) → zHCI(g) + N2(g) The values of x,y and z are respectively A. 2, 4, 6 B. 3, 2, 4 C. 2, 3, 6 D. 3, 2 6 |
C |