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Q. No.Consider the given two statements:
Assertion (A):
Inspiration can occur if there is a negative pressure in the lungs with respect to atmospheric pressure.
Reason (R):
The thoracic chamber is an airtight chamber.
1.
Both (A) and (R) are True and (R) correctly explains (A)
2.
Both (A) and (R) are True but (R) does not correctly explain (A)
3.
(A) is True, (R) is False
4.
(A) is False, (R) is True
Subtopic: Mechanism of Breathing |
80%
From NCERT
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Consider the given two statements:
| Assertion (A): | An increase in pulmonary volume will cause inspiration. |
| Reason (R): | An increase in pulmonary volume increases the intra-pulmonary pressure to more than the atmospheric pressure. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Respiratory System: Pulmonary Ventilation |
84%
From NCERT
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Consider the given two statements:
| Assertion (A): | Relaxation of the diaphragm and the inter-costal muscles brings about inspiration. |
| Reason (R): | Relaxation of the diaphragm and the inter-costal muscles leads to an increase in intra-pulmonary pressure to slightly above the atmospheric pressure. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A) |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A) |
| 3. | (A) is True but (R) is False |
| 4. | (A) is False but (R) is True |
Subtopic: Mechanism of Breathing |
83%
From NCERT
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On an average, a healthy human breathes:
1. 4-8 times/minute.
2. 8-12 times/minute.
3. 12-16 times/minute.
4.16-20 times/minute.
1. 4-8 times/minute.
2. 8-12 times/minute.
3. 12-16 times/minute.
4.16-20 times/minute.
Subtopic: Respiratory System: Pulmonary Ventilation |
96%
From NCERT
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Regarding pulmonary volumes and capacities, which of the following will not hold true?
1. TLC – VC = RV
2. TLC – RV = FRC
3. IC = VC - ERV
4. ERV + RV = FRC
1. TLC – VC = RV
2. TLC – RV = FRC
3. IC = VC - ERV
4. ERV + RV = FRC
Subtopic: Respiratory System: Pulmonary Volumes & Capacities |
66%
From NCERT
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Consider the two statements:
1. Statement I is correct; Statement II is correct
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | Expiratory Capacity is the total volume of air a person can expire after a normal inspiration. |
| Statement II: | Functional Residual Capacity is the volume of air that will remain in the lungs after a forceful maximal expiration. |
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Respiratory System: Pulmonary Volumes & Capacities |
61%
From NCERT
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Vital capacity can be defined as:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | The maximum volume of air a person can breathe in after a normal expiration. |
| II: | The maximum volume of air a person can breathe out after a normal inspiration. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Respiratory System: Pulmonary Volumes & Capacities |
59%
From NCERT
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The partial pressure of CO2 in deoxygenated blood and tissues is about:
1. 40 mm Hg
2. 45 mm Hg
3. 100 mm Hg
4. 104 mm Hg
1. 40 mm Hg
2. 45 mm Hg
3. 100 mm Hg
4. 104 mm Hg
Subtopic: Respiratory System: Exchange of Gases |
88%
From NCERT
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The correct sequence of the magnitude of the partial pressure of oxygen [beginning at the maximum] will be:
| 1. | Atmospheric air → Oxygenated blood → Alveoli → Tissues |
| 2. | Alveoli → Atmospheric air → Oxygenated blood → Tissues |
| 3. | Atmospheric air → Alveoli → Oxygenated blood → Tissues |
| 4. | Alveoli → Atmospheric air → Oxygenated blood → Deoxygenated blood |
Subtopic: Respiratory System: Exchange of Gases |
89%
From NCERT
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Consider the given two statements:
1. Statement I is correct; Statement II is correct
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | Each haemoglobin molecule can carry a maximum of four molecules of O2. |
| Statement II: | Hemoglobin can bind to four molecules of CO2. |
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Respiratory System: Transport of Gases |
From NCERT
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