Year :
1988
Title :
Chemistry
Exam :
WASSCE/WAEC MAY/JUNE
Paper 1 | Objectives
11 - 20 of 36 Questions
| # | Question | Ans |
|---|---|---|
| 11. |
Detergents are better than soaps for laundry because A. detergents are synthetic while soaps are not B. detergents are more soluble in water than soaps C. scum is precipitated when soaps are used with hard water but not with stergents D. soaps from soluble saits with ions causing hardness of water while detergents do not E. soaps are in bars while detergents are in powder form |
C |
| 12. |
Which of the following is used as an anaesthetic? A. CHI3 B. CHCI3 C. CH3OH D. C2H5OH E. CHBr3 |
B |
| 13. |
Which of the following types of hybridization gives rise to tetrahedral molecules? A. sp B. sp2 C. sp3 D. sp3d E. sp3d2 |
C |
| 14. |
Which of the following is a neutral oxide? A. Nitrogen (IV0 oxide B. Carbon (IV) oxide C. Sulphur (IV) oxide D. Phodphoorus (IV) oxide E. Nitrogen oxide |
E |
| 15. |
Which of the following statements is not correct? A. Carbon exhibits allotropy B. Sulphur exhibits allotropy C. Chlorine exhibits allotopy D. Nitrogen is a gas E. Argon is a noble gas |
C |
| 16. |
The following are uses of radioactive isotops except for A. sterilization of medical equipment B. tracing reaction paths C. dating elements D. radiography E. determining equilibrum positions |
E |
| 17. |
The main characteristic feature of transition metals is that they A. have the same atomic size B. are reducing agents C. from ions easily D. have variable oxidation states E. are highly electropositive |
D |
| 18. |
The following are heavy chemicals except A. tetraoxosulphate (IV) acid B. caustic soda C. sodium trioxocarbonate (IV) D. ethene E. dyes |
E |
| 19. |
What quantity of silver is deposited when 96500C of electricity is passed through a solution containing silver ions? (Ag = 108, 1F = 96500C) A. 1.08g B. 40g C. 10,.8g D. 21.6g E. 108g |
E |
| 20. |
Bubbling of carbon (IV)oxide into calcium hydroxide solution results in the formation of A. CaCO3 B. CuCO3 C. ZnCO,sub>3 D. Na2CO3 E. MgCO3 |
A |
| 11. |
Detergents are better than soaps for laundry because A. detergents are synthetic while soaps are not B. detergents are more soluble in water than soaps C. scum is precipitated when soaps are used with hard water but not with stergents D. soaps from soluble saits with ions causing hardness of water while detergents do not E. soaps are in bars while detergents are in powder form |
C |
| 12. |
Which of the following is used as an anaesthetic? A. CHI3 B. CHCI3 C. CH3OH D. C2H5OH E. CHBr3 |
B |
| 13. |
Which of the following types of hybridization gives rise to tetrahedral molecules? A. sp B. sp2 C. sp3 D. sp3d E. sp3d2 |
C |
| 14. |
Which of the following is a neutral oxide? A. Nitrogen (IV0 oxide B. Carbon (IV) oxide C. Sulphur (IV) oxide D. Phodphoorus (IV) oxide E. Nitrogen oxide |
E |
| 15. |
Which of the following statements is not correct? A. Carbon exhibits allotropy B. Sulphur exhibits allotropy C. Chlorine exhibits allotopy D. Nitrogen is a gas E. Argon is a noble gas |
C |
| 16. |
The following are uses of radioactive isotops except for A. sterilization of medical equipment B. tracing reaction paths C. dating elements D. radiography E. determining equilibrum positions |
E |
| 17. |
The main characteristic feature of transition metals is that they A. have the same atomic size B. are reducing agents C. from ions easily D. have variable oxidation states E. are highly electropositive |
D |
| 18. |
The following are heavy chemicals except A. tetraoxosulphate (IV) acid B. caustic soda C. sodium trioxocarbonate (IV) D. ethene E. dyes |
E |
| 19. |
What quantity of silver is deposited when 96500C of electricity is passed through a solution containing silver ions? (Ag = 108, 1F = 96500C) A. 1.08g B. 40g C. 10,.8g D. 21.6g E. 108g |
E |
| 20. |
Bubbling of carbon (IV)oxide into calcium hydroxide solution results in the formation of A. CaCO3 B. CuCO3 C. ZnCO,sub>3 D. Na2CO3 E. MgCO3 |
A |