Breathing & Exchange of Gases: NEET Biology Previous Year Questions

35 previous year questions from Breathing & Exchange of Gases. Here are the 25 most important ones; open any question for the correct answer and a full step-by-step solution.

1. 1.Two friends are eating together on a dining table. One of them suddenly starts coughing while swallowing some food. This coughing would have been due to improper movement…
2. 2.Select the favourable conditions required for the formation of oxyhaemoglobin at the alveoli.
3. 3.Under normal physiological conditions in human being every 100 ml of oxygenated blood can deliver ml of $O_2$ to the tissues.
4. 4.Which one of the following statements is incorrect ?
5. 5.The bulk of carbon dioxide $C{O}_2$ released from body tissues into the blood is present as
6. 6.Due to increasing air-borne allergens and pollutants, many people in urban areas are suffering from respiratory disorder causing wheezing due to
7. 7.Name the chronic respiratory disorder caused mainly by cigarette smoking:
8. 8.The majority of carbon dioxide produced by our body cells is transported to the lungs –
9. 9.Listed below are the four respiratory capacities (1 to 4) and four jumbled respiratory volumes of a normal human adult Respiratory capacities Respiratory volumes (i) Resi…
10. 10.Identify the wrong statement with reference to transport of oxygen.
11. 11.Lungs do not collapse between breaths and some air always remains in the lungs which can never be expelled because
12. 12.The partial pressures (in mm Hg ) of oxygen $\left(O_2\right)$ and carbon dioxide $\left({\text{CO}}_2\right)$ at alveoli (the site of diffusion) are:
13. 13.Which of the following is not the function of conducting part of respiratory system?
14. 14.The Total Lung Capacity (TLC) is the total volume of air accommodated in the lungs at the end of a forced inspiration. This includes:
15. 15.Tidal Volume and Expiratory Reserve Volume of an athlete is 500 mL and 1000 mL respectively. What will be his Expiratory Capacity if the Residual Volume is 1200 mL?
16. 16.Identify the region of human brain which has pneumotaxic center that alters respiratory rate by reducing the duration of inspiration.
17. 17.Which of the following disorders represents decrease in respiratory surface due to damaged alveolar walls?
18. 18.Approximately seventy percent of carbon dioxide absorbed by the blood will be transported to the lungs
19. 19.Which one of the following is a possibility for most of us with regard to breathing by making a conscious effort?
20. 20.The partial pressure of oxygen in the alveoli of the lungs is
21. 21.Bulk of carbon dioxide ($C{O}_2$) released from body tissues into the blood is present as :
22. 22.The maximum volume of air a person can breathe in after a forced expiration is known as :
23. 23.In the regulation of respiration, a chemo sensitive area adjacent to the rhythm centre in the medulla region of the brain, is highly sensitive to :
24. 24.Which one of the following is the correct statement for respiration in humans?
25. 25.When you hold your breath, which of the following gas changes in blood would first lead to the urge in breathe?