Inspired and Expired Air

Q.

3 differences between inspired and expired air

Q. Assertion :Partial pressure of $O_2$ in the alveoli is 104 mm Hg. Reason: Partial pressure of $O_2$ is dependent upon concentration of $C{O}_2$.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
3. Assertion is correct but Reason is incorrect.
4. Both Assertion and Reason are incorrect.

Q. When $O_2$ concentration in blood increases, breathing becomes

1. Shallower and slow
2. There is no effect on breathing
3. Slow and deep
4. Faster and deeper

Q.

Choose the correct statement from the following options

(a)The lungs allow only $C{O}_2$ to enter the respiratory system
(b)The nostrils filter the air and allow only $O_2$ to pass through them.
(c)The percentage of $O_2$ in expired air is 16%
(d)The percentage of $C{O}_2$ in expired air is 4%

1. a and c

2. b and c

3. b, c and d

4. c and d

Q. What is the normal percentage composition of gases in inspired air and expired air respectively?

Q.

Are diaphragms a floating rib or an organ ?

Q. A large quantity of one of the following is removed from our body by lungs.

1. $C{O}_2$ only
2. Ammonia
3. $H_{2}O$ only
4. $C{O}_2$ and $H_{2}O$

Q. Which of these statements is/are true about the given sample of air?
Nitrogen - 78.0%
Oxygen - 16.4%
Carbon dioxide - 4.4%

1. Exhaled air
2. Polluted air near a factory
3. Fresh air from a field
4. Dissolved air from pond water

Q. On a very cold morning, Boojho and Paheli were talking with each other as they walked down to their school. They observed that the air coming out of their mouth looked like smoke. They were amused and wondered how it happened. Help them find the answer.

Q. Which of the following differentiates the expired air from the inspired air?

1. Less oxygen
2. Presence of bacteria
3. More water vapour
4. All of the above

Q. Diaphragm of man is completely dome shaped during the

1. End of expiration and beginning of inspiration
2. Beginning of expiration and end of inspiration
3. Increased rate of breathing
4. Decreased rate of breathing

Q. __________ contains low amount of water vapors.

1. None of the above
2. Expired air
3. Inspired air
4. Both A and B

Q. Why the temperature of expired air is more has that of inspired air?

1. It contains less oxygen.
2. It contains move carbon dioxide.
3. Air gets warmed by the respiratory passage.
4. All of the above