Theory
Practice Questions
| 1. |
Reversible and irreversible chages
Difficulty: easy |
2
|
| 2. |
Physical and chemical changes
Difficulty: easy |
2
|
| 3. |
Changes around us
Difficulty: easy |
2
|
| 4. |
Characteristics of natural changes
Difficulty: medium |
2
|
| 5. |
Natural changes
Difficulty: medium |
2
|
| 6. |
Type of changes
Difficulty: medium |
2
|
| 7. |
Comparison of desirable and undesirable changes
Difficulty: hard |
5
|
| 8. |
Changes
Difficulty: hard |
5
|
| 9. |
Weathering of rocks and soil erosion
Difficulty: hard |
5
|