PDF chapter test TRY NOW
Theory
Practice Questions
| 1. |
Constituents of air
Difficulty: easy |
2
|
| 2. |
Uses of air
Difficulty: easy |
2
|
| 3. |
Inhalation and exhalation
Difficulty: easy |
3
|
| 4. |
Equation of photosynthesis and respiration
Difficulty: easy |
2
|
| 5. |
Air composition
Difficulty: medium |
4
|
| 6. |
Dust particles
Difficulty: medium |
4
|
| 7. |
Gases in the air
Difficulty: easy |
2
|
| 8. |
Gases used by plants and animals
Difficulty: medium |
4
|
| 9. |
Other constituents of air
Difficulty: medium |
4
|
| 10. |
Respiratory organs
Difficulty: medium |
4
|
| 11. |
Respiration
Difficulty: hard |
6
|
| 12. |
Contents of air
Difficulty: hard |
6
|
Tests
| 1. |
Training test 1
Difficulty: medium |
8
|
| 2. |
Training test 2
Difficulty: medium |
9
|
