10th Biology Chapter 1 Gaseous Exchange
| Sr # | Questions | A | B | C | D |
|---|---|---|---|---|---|
| 1 | How many lobes are present in right lung? | 2 | 3 | 4 | 5 | 2 | Powerful poison which damages brain is: | Tar | Nicotine | Carcinogen | Carbon monoxide | 3 | Rate of breathing depends on concentration of which gas in blood? | Oxygen | Carbon dioxide | Nitrogen | Hydrogen | 4 | Lungs are organ which are: | Spongy | Elastic | Spongy and elastic | Tough | 5 | Percentage of carbon dioxide in exhaled air is: | 16% | 4% | 79% | 0.04% | 6 | Number of pairs of ribs in humans is: | 12 | 24 | 26 | None of these | 7 | Cluster of pouches found in respiratory system: | Bronchi | Alveoli | Bronchioles | Trachea | 8 | Which of the following is called voice box? | Trachea | Larynx | Bronchi | Alveoli | 9 | How many bronchi are found in air passageway? | 1 | 2 | Many | None | 10 | Which one is form of allergy? | Asthma | Bronchitis | Pneumonia | Lung cancer | 11 | Which of the following lessens the oxygen carrying capacity of hemoglobin? | Tar | Carbon dioxide | Nicotine | Carbon monoxide | 12 | Air passageway starts from: | Nose | Pharynx | Trachea | Bronchi |