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Class 11 Biology Practice Test: Breathing and Exchange of Gases - Mechanism of Breathing
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Class 11 Biology Practice Test: Breathing and Exchange of Gases - Mechanism of Breathing
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18 Questions

1. Which does not occur on normal inspiration?
2. What happens to RBC of human blood at high altitude?
3. Which muscles can help in increasing the strength of breathing?
4. Which of the following is passive process?
5. At the time of inspiration, _________ takes place.
6. Contraction in diaphgram causes increase in thoracic volume in the _____
7. Which one of the following changes takes place during inspiration?
8. Which instrument is used for measuring volume of air involved in breathing?
9. Inspiration occurs when there is ___________
10. Dead space air is _______
11. Contraction in diaphgram causes increase in thoracic volume in the _____
12. Which of the following is the most important muscular structure in respiratory system of human?
13. Air that remains in lungs after most powerful expiration is _______
14. Pneumotaxic centre is located in ________
15. Strength of inspiration and expiration can be increased with the help of_______
16. The amount of air inspired or expired during normal breathing is_________ ml.
17. Strength of inspiration and expiration can be increased with the help of_______
18. Air that remains in lungs after most powerful expiration is _______

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