Theory
Practice Questions
| 1. |
Nature of pure and impure substance
Difficulty: easy |
3
|
| 2. |
Pure and impure substances
Difficulty: easy |
2
|
| 3. |
Element, mixture and compound
Difficulty: medium |
3
|
| 4. |
Mixture
Difficulty: medium |
3
|
| 5. |
Pure substance and mixtures
Difficulty: medium |
1
|
| 6. |
Uniform and non-uniform mixture
Difficulty: medium |
2
|
| 7. |
Electrolysis
Difficulty: hard |
2
|
| 8. |
Nature of water
Difficulty: hard |
3
|
| 9. |
Water as a compound
Difficulty: hard |
3
|