Theory
Practice Questions
| 1. |
Reversible and irreversible changes
Difficulty: easy |
4
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| 2. |
Types of changes
Difficulty: easy |
2
|
| 3. |
Examples of reversible and irreversible changes
Difficulty: easy |
2
|
| 4. |
Properties of reversible and irreversible changes
Difficulty: medium |
3
|
| 5. |
Some slow natural changes
Difficulty: medium |
2
|
| 6. |
Characteristics of desirable and undesirable change
Difficulty: medium |
2
|
| 7. |
Characteristics of reversible and irreversible change
Difficulty: hard |
6
|
| 8. |
Natural changes: Weathering of rocks and soil erosion
Difficulty: hard |
2
|
| 9. |
Burning of candle
Difficulty: hard |
2
|
| 10. |
Steps involved in natural change
Difficulty: hard |
4
|