Year :
1993
Title :
Chemistry
Exam :
WASSCE/WAEC MAY/JUNE
Paper 1 | Objectives
1 - 10 of 33 Questions
| # | Question | Ans |
|---|---|---|
| 1. |
Copper metal will react with concentrated trioxonitrate (V) acid to give? A. Cu(NO3)3 + NO + N2O4 + H2O B. Cu(NO3)2 + NO + H2O C. CuO + NO2 + H2O D. Cu(NO2)3 + NO2 + H2O |
D |
| 2. |
Which of the following separation is routinely applied in the petroleum industry A. Filtration B. Chromatography C. Evaporation D. Fractional crystallization E. Fractional distillation |
E |
| 3. |
Starch undergoes complete hydrolysis to produce A. maltose B. lactose C. fructose D. glucose E. sucrose |
D |
| 4. |
Which of the following solids has a network structure? A. Diamond B. lodine C. Sulphur D. Graphite E. lron |
A |
| 5. |
Trioxosulphate (lV) acid is not stored for a long period because it A. is a weak dibasic acid B. has bleaching properties C. is unstable and eaily decomposed D. smells strongly of sulphur (lV) oxide E. can act as a germicide |
C |
| 6. |
Alkanes are used mainly A. in the production of plastics B. as domestic and industrial fuels C. in the textile industry D. in the hydrogenation of oils E. as fine chemicals |
B |
| 7. |
Which of the following pairs illustrates isotopy? A. But-l-ene and but -2-ene B. Ortho-hydrogen and parahydrogen C. Oxygen and ozone D. Hydrogen and deuterium E. Alpha-particle and beta-particle |
D |
| 8. |
Carbon is often deposited in the exhaust-pipe of cars because of the A. presence of carbon in petrol B. dehydrogenation of petrol C. incomplete combustion of petrol D. presence of additives in petrol E. contamination of petrol with diesel |
D |
| 9. |
What does X atand for in the following expression? X = Log(10)(H+) A. Enthalpy change (∆H) B. Equilibrium constant (K) C. Solubility product D. Degree of acidity (pH) E. lonic product of water |
D |
| 10. |
Sulphur burns in air to form A. an acidic oxide B. a basic oxide C. an amphoteric oxide D. a neutra oxide E. a mixed oxide |
A |
| 1. |
Copper metal will react with concentrated trioxonitrate (V) acid to give? A. Cu(NO3)3 + NO + N2O4 + H2O B. Cu(NO3)2 + NO + H2O C. CuO + NO2 + H2O D. Cu(NO2)3 + NO2 + H2O |
D |
| 2. |
Which of the following separation is routinely applied in the petroleum industry A. Filtration B. Chromatography C. Evaporation D. Fractional crystallization E. Fractional distillation |
E |
| 3. |
Starch undergoes complete hydrolysis to produce A. maltose B. lactose C. fructose D. glucose E. sucrose |
D |
| 4. |
Which of the following solids has a network structure? A. Diamond B. lodine C. Sulphur D. Graphite E. lron |
A |
| 5. |
Trioxosulphate (lV) acid is not stored for a long period because it A. is a weak dibasic acid B. has bleaching properties C. is unstable and eaily decomposed D. smells strongly of sulphur (lV) oxide E. can act as a germicide |
C |
| 6. |
Alkanes are used mainly A. in the production of plastics B. as domestic and industrial fuels C. in the textile industry D. in the hydrogenation of oils E. as fine chemicals |
B |
| 7. |
Which of the following pairs illustrates isotopy? A. But-l-ene and but -2-ene B. Ortho-hydrogen and parahydrogen C. Oxygen and ozone D. Hydrogen and deuterium E. Alpha-particle and beta-particle |
D |
| 8. |
Carbon is often deposited in the exhaust-pipe of cars because of the A. presence of carbon in petrol B. dehydrogenation of petrol C. incomplete combustion of petrol D. presence of additives in petrol E. contamination of petrol with diesel |
D |
| 9. |
What does X atand for in the following expression? X = Log(10)(H+) A. Enthalpy change (∆H) B. Equilibrium constant (K) C. Solubility product D. Degree of acidity (pH) E. lonic product of water |
D |
| 10. |
Sulphur burns in air to form A. an acidic oxide B. a basic oxide C. an amphoteric oxide D. a neutra oxide E. a mixed oxide |
A |