The normal range of ‘breathing rate’ per minute of an average adult person at rest is:

9-12

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15-18

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21-24

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30-33

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Solution

The correct option is B
15-18

The correct option is B.
Explanation of the correct option:
The process, by which air is drawn in from the atmosphere into the lungs and forced out from the lungs back into the atmosphere is known as breathing.
One complete breath involves two phases- inspiration and expiration.
The number of times a person breathes in one minute is called breathing rate.
The breathing rate in normal adults at rest is about 15-18 times per minute.
Final answer:
The normal range of ‘breathing rate’ per minute of an average adult person at rest is 15-18 times per minute.

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Similar questions

Q. Normal range of breathing rate per minute in an average adult person at rest is.

Tick the correct answer:

(a) In cockroaches, air enters the body through

(i) lungs

(iii) spiracles

(iv) skin

(b) During heavy exercise, we get cramps in the legs due to the accumulation of

(i) carbon dioxide

lactic acid

alcohol

(iv) water

(i) 9-12

(ii) 15-18

(iii) 21-24

(iv) 30-33

(d) During exhalation, the ribs

(i) move outwards

(ii) move downwards

(iii) move upwards

(iv) do not move at all

Question 5 (c)
Tick the correct answer:
(c) Normal range of breathing rate per minute in an average adult person at rest is:
(i) 9 – 12
(ii) 15–18
(iii) 21–24
(iv) 30–33

Q. What is the rate of breathing per minute in an adult when he is at rest?

Q. Question 11
On an average, an adult human being at rest breathes 15–18 times per minute. The breathing rate, however, may differ under different conditions. Arrange the following activities given in the box in order of increasing breathing rates and give reason for your answer.

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