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When you hold your breath, which of ~he ...

When you hold your breath, which of ~he following gas changes in blood would first lead to the urge to breathe?

A

Falling `CO_2` concentration

B

Rising `CO_2` and falling `O_2` concentration

C

Falling `O_2` concentration

D

Rising `CO_2` concentration

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The correct Answer is:
D
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AAKASH SERIES-BREATHING AND EXCHANGE OF GASES -EXERCISE-III (Previous AIPMT/NEET Questions)
  1. Which of the following cannot be measured by spirometry?

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  2. A pollution can result in Emphysema, which is

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  3. Name the chronic respiratory disorder caused mainly by cigarette smoki...

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  4. Reducing in pH of blood will

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  5. The partial pressure of oxygen in the alveoli of the lungs is

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  6. Lungs do not collapse between breaths and some air always remains in t...

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  7. In which disease due to narowing of tracheal passages alveoli are depr...

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  8. When you hold your breath, which of ~he following gas changes in blood...

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  9. Approximately seventy percent of carbon dixode absorbed by the blood w...

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  10. The figure shows a diagrammatic view of human respiratory system with ...

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  11. Which one of the following is the correct statement for respiration in...

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  12. Why people migrate from place to place? Is there any families migrate ...

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  13. A large proportion of oxygen remain unused in the human blood even aft...

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  14. The figure given below shows a small part of human lung where exchange...

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  15. Bulk of carbon dioxide (CO(2)) released form body tissues in to the b...

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  16. Which one of the following is a possibility for most of us in regard t...

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  17. Which of the following statement is true about RBCs in humans?

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  18. Listed below are four respriatory capacities (i-iv) and four jumbled ...

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  19. What is vital capacity of our lungs ?

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  20. The haemoglobin of human foetus

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