Year :
1995
Title :
Chemistry
Exam :
WASSCE/WAEC MAY/JUNE
Paper 1 | Objectives
11 - 20 of 29 Questions
| # | Question | Ans |
|---|---|---|
| 11. |
Sodium chloride cannot conduct electricity in the solid state because it A. is a normal salt B. is highly soluble in water C. is an electrovalent compound D. does not have any effect on litmus E. does not contain mobile ions |
E |
| 12. |
What mass of copper will be deposited by the liberation of Cu2+ when 0.1F of electricity flows through an aqueous solution of a copper (ll) salt? [Cu = 64] A. 64g B. 32g C. 12.8g D. 6.4g E. 3.2g |
E |
| 13. |
What mass of copper will be deposited by the liberation of Cu2+ when 0.1F of electricity flows through an aqueous solution of a copper (ll) salt? [Cu = 64] A. 64g B. 32g C. 12.8g D. 6.4g E. 3.2g |
E |
| 14. |
Which of the following is not correct of the reaction represented by the equation below? 2C(s) + O2(g) → 2CO(g); ∆H = - xKJ A. there is an increase in entropy ; B. There is anincrease in gaseous volume C. Carbon (lV) oxide is produced D. The oxidation number of carbon increases from 0 to +2 E. The reaction is exothermic |
C |
| 15. |
H3O+(aq) + OH-(aq) → 2H2O(l). The heat change accompanying the process represented by the equation above is the heat of A. neutralization B. formation C. solution D. dilution E. hydration |
A |
| 16. |
The following statements about graphite are correct except that it A. is used as a lubricant B. has a network structure C. contains mobile free electrons D. is good conductor E. is an allotrope of carbon |
B |
| 17. |
Which of the following is hydrocarbons is unsaturated? A. Ethane B. Benzene C. Propane D. 2 - methylbutane E. 2,2,4-trimethylpentane |
B |
| 18. |
The following can be obtained directly from the destructive distillation of coal except A. ammoniacal liquor B. coke C. producer gas D. coal gas E. coal tar |
C |
| 19. |
Fructose and glucose are classified as carbohydrates because they A. are crystalline white solids B. are energy -giving substances C. are naturally occurring organic compounds D. contain carbon oxygen and hydrogen E. conform to the general formula Cx(H2O)y |
E |
| 20. |
The gas produced when a mixture of sodium propanoate and soda lime is heated is A. methane B. pentane C. ethane D. butene E. ethyne |
C |
| 11. |
Sodium chloride cannot conduct electricity in the solid state because it A. is a normal salt B. is highly soluble in water C. is an electrovalent compound D. does not have any effect on litmus E. does not contain mobile ions |
E |
| 12. |
What mass of copper will be deposited by the liberation of Cu2+ when 0.1F of electricity flows through an aqueous solution of a copper (ll) salt? [Cu = 64] A. 64g B. 32g C. 12.8g D. 6.4g E. 3.2g |
E |
| 13. |
What mass of copper will be deposited by the liberation of Cu2+ when 0.1F of electricity flows through an aqueous solution of a copper (ll) salt? [Cu = 64] A. 64g B. 32g C. 12.8g D. 6.4g E. 3.2g |
E |
| 14. |
Which of the following is not correct of the reaction represented by the equation below? 2C(s) + O2(g) → 2CO(g); ∆H = - xKJ A. there is an increase in entropy ; B. There is anincrease in gaseous volume C. Carbon (lV) oxide is produced D. The oxidation number of carbon increases from 0 to +2 E. The reaction is exothermic |
C |
| 15. |
H3O+(aq) + OH-(aq) → 2H2O(l). The heat change accompanying the process represented by the equation above is the heat of A. neutralization B. formation C. solution D. dilution E. hydration |
A |
| 16. |
The following statements about graphite are correct except that it A. is used as a lubricant B. has a network structure C. contains mobile free electrons D. is good conductor E. is an allotrope of carbon |
B |
| 17. |
Which of the following is hydrocarbons is unsaturated? A. Ethane B. Benzene C. Propane D. 2 - methylbutane E. 2,2,4-trimethylpentane |
B |
| 18. |
The following can be obtained directly from the destructive distillation of coal except A. ammoniacal liquor B. coke C. producer gas D. coal gas E. coal tar |
C |
| 19. |
Fructose and glucose are classified as carbohydrates because they A. are crystalline white solids B. are energy -giving substances C. are naturally occurring organic compounds D. contain carbon oxygen and hydrogen E. conform to the general formula Cx(H2O)y |
E |
| 20. |
The gas produced when a mixture of sodium propanoate and soda lime is heated is A. methane B. pentane C. ethane D. butene E. ethyne |
C |