Theory
Practice Questions
| 1. |
Pure substance
Difficulty: easy |
2
|
| 2. |
Mixture
Difficulty: easy |
2
|
| 3. |
Nature of elements
Difficulty: medium |
2
|
| 4. |
Mixture and compounds
Difficulty: medium |
2
|
| 5. |
Types of mixture
Difficulty: medium |
3
|
| 6. |
Electrolysis of water
Difficulty: medium |
4
|
| 7. |
Iron, sulphur and iron sulphide
Difficulty: hard |
4
|
| 8. |
Comparison of elements and compounds
Difficulty: hard |
5
|
| 9. |
Applications of elements and minerals
Difficulty: hard |
4
|