Year :
2005
Title :
Chemistry
Exam :
WASSCE/WAEC MAY/JUNE
Paper 1 | Objectives
21 - 30 of 37 Questions
| # | Question | Ans |
|---|---|---|
| 21. |
Which of the following compounds dissolves readily in water? A. BaSO4 B. CuSO3 C. NH4CI D. AgCI |
C |
| 22. |
When ice is changing to water, its temperature remains the same because the heart gained is A. used to separate the molecules B. lost partially to the atmosphere C. used to increase the volume of ice D. less than the activation energy |
A |
| 23. |
Which of the following methods is suitable for preparing insoluble salts? A. Thermal decomposition B. Oxidation C. Double decomposition D. Neutralization |
C |
| 24. |
Which of the following reactions is sulphur (IV) oxidizing agent? A. 2HNO 3(aq) + SO2(g) → H2SO4(aq) + 2NO2(g) B. 2KMnO 4(aq) + 5SO2(g) + 2H2O → K2SO4(aq) +MnSO4(aq) 2H2SO4(aq) C. FeCI3(aq) + SO2(g) + 2H2O(l) → FeCI 2(g)+ 2HCI(g) + H2SO4(aq) D. 2H2S(g) + SO2(g) →2H2O(l) + 3S(s) Detailed SolutionIt also reduces potassium permanganate and dichromate to Mn2+ and Cr3+ respectively. |
|
| 25. |
Which of the elements will burn in excess oxygen to form a product that is neutral to litmus? A. Carbon B. Hydrogen C. Sulphur D. Sodium |
B |
| 26. |
The main difference between a primary cell and a secondary cell is that the primary cell A. is an electrolytic cell but the secondary is not B. cannot be recharged but the secondary cell can C. can be recharged but the secondary cell cannot D. contains electrodes but the secondary cell does not |
B |
| 27. |
Determine the mass of copper deposited by 4.0 moles of electrons in the reaction represented by the equation below: Cu2(aq) + 2e- → Cu(s) A. 32 B. 64 C. 128 D. 256 |
C |
| 28. |
Reaction undergone by compounds with the general formula Cn H2n+2 include A. addition B. esterification C. substitution D. dehydration |
C |
| 29. |
What is the major product formed when C2H5OH reacts with CH3COOH? A. C2H5COOCH3 B. C2HCOCH3 C. CH3COOC2H5 D. C3H7COOH |
C |
| 30. |
Which of the following substances is a non-reducing sugar? A. Sucrose B. Glucose C. Fructose D. Maltose |
A |
| 21. |
Which of the following compounds dissolves readily in water? A. BaSO4 B. CuSO3 C. NH4CI D. AgCI |
C |
| 22. |
When ice is changing to water, its temperature remains the same because the heart gained is A. used to separate the molecules B. lost partially to the atmosphere C. used to increase the volume of ice D. less than the activation energy |
A |
| 23. |
Which of the following methods is suitable for preparing insoluble salts? A. Thermal decomposition B. Oxidation C. Double decomposition D. Neutralization |
C |
| 24. |
Which of the following reactions is sulphur (IV) oxidizing agent? A. 2HNO 3(aq) + SO2(g) → H2SO4(aq) + 2NO2(g) B. 2KMnO 4(aq) + 5SO2(g) + 2H2O → K2SO4(aq) +MnSO4(aq) 2H2SO4(aq) C. FeCI3(aq) + SO2(g) + 2H2O(l) → FeCI 2(g)+ 2HCI(g) + H2SO4(aq) D. 2H2S(g) + SO2(g) →2H2O(l) + 3S(s) Detailed SolutionIt also reduces potassium permanganate and dichromate to Mn2+ and Cr3+ respectively. |
|
| 25. |
Which of the elements will burn in excess oxygen to form a product that is neutral to litmus? A. Carbon B. Hydrogen C. Sulphur D. Sodium |
B |
| 26. |
The main difference between a primary cell and a secondary cell is that the primary cell A. is an electrolytic cell but the secondary is not B. cannot be recharged but the secondary cell can C. can be recharged but the secondary cell cannot D. contains electrodes but the secondary cell does not |
B |
| 27. |
Determine the mass of copper deposited by 4.0 moles of electrons in the reaction represented by the equation below: Cu2(aq) + 2e- → Cu(s) A. 32 B. 64 C. 128 D. 256 |
C |
| 28. |
Reaction undergone by compounds with the general formula Cn H2n+2 include A. addition B. esterification C. substitution D. dehydration |
C |
| 29. |
What is the major product formed when C2H5OH reacts with CH3COOH? A. C2H5COOCH3 B. C2HCOCH3 C. CH3COOC2H5 D. C3H7COOH |
C |
| 30. |
Which of the following substances is a non-reducing sugar? A. Sucrose B. Glucose C. Fructose D. Maltose |
A |