| MCQ | Answer | Area of Chemistry |
| 1. | C | [Electron Arrangement] |
| 2. | C | [Gas Tests – Oxygen] |
| 3. | D | [Diatomic elements] |
| 4. | B | [Atomic Structure/ Nuclide notation] |
| 5. | D | [Chemical Formula – Prefixes] |
| 6. | A | [Electron Arrangement/ Properties of Elements/ Groups in Periodic Table] |
| 7. | A | [Substances] |
| 8. | A | [Gas Tests -Hydrogen] |
| 9. | |
| a) | molecules composed of only two atoms (covalently bonded) |
| b) | hydrogen/ nitrogen/ oxygen/ fluorine/ chlorine/ bromine/ iodine |
| 10. |
| 11. | O2-, Na+ | ||
| 12. | |||
 |
HIGH | ||
 |
LOW | ||
 |
HIGH | ||
 |
LOW |
| 13. | a) | N2 | b) | Al | c) | H2 |
| d) | Cl2 | e) | Br2 | f) | H2O | |
| g) | CCl4 | h) | NF3 | i) | SiBr4 | |
| j) | SiO2 | e) | SiO4 | f) | N2O4 |
