Year :
2015
Title :
Chemistry
Exam :
WASSCE/WAEC MAY/JUNE
Paper 1 | Objectives
1 - 10 of 50 Questions
| # | Question | Ans |
|---|---|---|
| 1. |
The negatively charged particle in an atom is the A. Electron B. Neutron C. Positron D. Proton |
A |
| 2. |
How many orbits are contained in an atom with atomic number 13? A. 7 B. 6 C. 5 D. 3 |
D |
| 3. |
The Van der waals' forces are dominant intermolecular forces in_______? A. Ammonium chloride B. Chlorine C. Sodium chloride D. Water |
B |
| 4. |
The compound formed between 14X and 16Y is _______? A. XY B. XY2 C. X2Y D. X4Y6 |
B |
| 5. |
The shape of a molecule of water is _______? A. Non-linear B. Octahedral C. Pyramidal D. Tetrahedral |
A |
| 6. |
A metallic ion Z2+ with an inert gas structure contains 18 electrons. How many protons are contained in this ion? A. 20 B. 18 C. 16 D. 2 |
A |
| 7. |
Which of the following pairs of elements forms amphoteric oxides? A. Be and Mg B. Na and K C. B and Al D. Si and Pb Detailed SolutionMetal oxides which react with both acids as well as bases to produce salts and water are known as amphoteric oxides.Many metals (such as zinc, tin, lead, aluminium, and beryllium) form amphoteric oxides or hydroxides. |
|
| 8. |
Which of the following pairs of compounds belongs to the same homologous series? A. C3H8 and C3H6 B. C4H10 and C5H10 C. C2H4 and C4H10 D. C2H6 and C4H10 Detailed Solutionboth ethane and butane are in the same homologous series.( alkanes) |
|
| 9. |
The following transition metal ions would be coloured in aqueous solution except________? A. Cr3+ B. Fe3+ C. Mn3+ D. Sc3+ |
D |
| 10. |
The gas given off when ethanol reacts with sodium is A. Carbon(IV)oxide B. Hydrogen C. Methane D. Oxygen |
B |
| 1. |
The negatively charged particle in an atom is the A. Electron B. Neutron C. Positron D. Proton |
A |
| 2. |
How many orbits are contained in an atom with atomic number 13? A. 7 B. 6 C. 5 D. 3 |
D |
| 3. |
The Van der waals' forces are dominant intermolecular forces in_______? A. Ammonium chloride B. Chlorine C. Sodium chloride D. Water |
B |
| 4. |
The compound formed between 14X and 16Y is _______? A. XY B. XY2 C. X2Y D. X4Y6 |
B |
| 5. |
The shape of a molecule of water is _______? A. Non-linear B. Octahedral C. Pyramidal D. Tetrahedral |
A |
| 6. |
A metallic ion Z2+ with an inert gas structure contains 18 electrons. How many protons are contained in this ion? A. 20 B. 18 C. 16 D. 2 |
A |
| 7. |
Which of the following pairs of elements forms amphoteric oxides? A. Be and Mg B. Na and K C. B and Al D. Si and Pb Detailed SolutionMetal oxides which react with both acids as well as bases to produce salts and water are known as amphoteric oxides.Many metals (such as zinc, tin, lead, aluminium, and beryllium) form amphoteric oxides or hydroxides. |
|
| 8. |
Which of the following pairs of compounds belongs to the same homologous series? A. C3H8 and C3H6 B. C4H10 and C5H10 C. C2H4 and C4H10 D. C2H6 and C4H10 Detailed Solutionboth ethane and butane are in the same homologous series.( alkanes) |
|
| 9. |
The following transition metal ions would be coloured in aqueous solution except________? A. Cr3+ B. Fe3+ C. Mn3+ D. Sc3+ |
D |
| 10. |
The gas given off when ethanol reacts with sodium is A. Carbon(IV)oxide B. Hydrogen C. Methane D. Oxygen |
B |