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Standard VII

Biology

Breathing

The normal ra...

Question

The normal range of breathing rate per minute in an average adult person at rest is ______ .

9 – 12

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12 – 20

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21 – 24

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30 – 33

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Solution

The correct option is
B

12 – 20
The normal range of breathing rate per minute in an average adult, for a person at rest, is 12 – 20 breaths per minute. Any person having a breathing rate under 12 or over 25 is considered to be breathing abnormally.

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Similar questions

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

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 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.

sleeping, cycling, brisk walk, watching TV

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

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The normal range of breathing rate per minute in an average adult person at rest is ______ .

The correct option is B 12 – 20 The normal range of breathing rate per minute in an average adult, for a person at rest, is 12 – 20 breaths per minute. Any person having a breathing rate under 12 or over 25 is considered to be breathing abnormally.

The correct option is
B

12 – 20
The normal range of breathing rate per minute in an average adult, for a person at rest, is 12 – 20 breaths per minute. Any person having a breathing rate under 12 or over 25 is considered to be breathing abnormally.