Experiments on Breathing and Respiration

Q. In the experiment to demonstrate the action of diaphragm, balloons expand when the sheet is pulled downwards. Which of the following is a possible reason for this?

1. Increase in volume
2. Increase in pressure
3. Constant volume and pressure
4. Decrease in volume

Q.

What will you observe when you place a small animal such as a live cockroach in one flask (A) and a dead cockroach in the other flask (B) where both flasks are fitted with a rubber cork and left for few hours, after that introduced with small burning candle into each flask and mouths are closed immediately as shown in the figure.

1. The flame goes off faster in the flask (A).

2. The flame goes off faster in both the flask (A) and (B).

3. The flame goes off slower in both the flask (A) and (B).

4. The flame goes off faster in the flask (B).

Q. In the experiment to demonstrate the action of diaphragm, balloons expand when the sheet is pulled downwards. Which of the following is a possible reason for this?

1. Increase in volume
2. Increase in pressure
3. Constant volume and pressure
4. Decrease in volume

Q. Read the following statements and select the incorrect one.
निम्नलिखित कथनों को पढ़िए और गलत कथन का चयन कीजिए।

1. During deep, forced inhalation, accessory muscles of inspiration also participate which further increase the size of thoracic cavity. It is a passive process.
   गहरे, बलपूर्वक अंतःश्वसन के दौरान, अंतःश्वसन की सहायक पेशियाँ भी भाग लेती हैं जो आगे वक्ष गुहा का आयतन बढ़ा देती हैं। यह एक निष्क्रिय प्रक्रम है
2. Exhalation becomes active only during forceful breathing, like, while playing the flute or exercising.
   निःश्वसन केवल बलपूर्वक श्वासन जैसे बाँसुरी बजाते समय या व्यायाम करते समय सक्रिय होता है
3. During normal inhalation, the pressure in the pleural cavity, which is between the two pleural layers is always subatmospheric.
   सामान्य अंतःश्वसन के दौरान दो फुफ्फुसावरणी परतों के बीच में उपस्थित फुफ्फुसावरणी गुहा में दाब, हमेशा वायुमंडलीय दाब से कम होता है
4. Breathing out is also called exhalation and is due to a pressure gradient, but it is in opposite direction in comparison to inspiration.
   श्वास बाहर छोड़ने को निःश्वसन भी कहते हैं तथा यह दाब प्रवणता के कारण होता है लेकिन अंतःश्वसन की तुलना में यह विपरित दिशा में होता है

Q.

What will you observe when you place a small animal such as a live cockroach in one flask (A) and a dead cockroach in the other flask (B) where both flasks are fitted with a rubber cork which left for few hours, after that introduced with small burning candle into each flask and mouths are closed immediately as shown in the figure.

1. The flame goes off faster in the flask (A).

2. The flame goes off slower in both the flask (A) and (B).

3. The flame goes off faster in the flask (B).

4. The flame goes off faster in both the flask (A) and (B).