Count how many times in one minute do you breathe in and breathe out?
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On an average, an adult human being at rest breathes 15–18 times per minute. The breathing rate, however, may differ under different conditions.
sleeping > watching T.V. > brisk walk > cycling Whenever a person does an activity, the breathing rate becomes faster. It further increases with strenuous work to provide more oxygen to...
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To clean their spectacles, people often breathe out on glasses to make them wet. Explain why the glasses become wet
When we breathe out, moist air comes out (along with energy and carbon dioxide) which make the glasses wet (as water vapours get condense on glass).
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A monkey ascends a greased pole 12 meters high. He ascends 2 meters in the first minute and slips down 1 meter in the next minute and so on .
(a) In 2 minutes, he ascends = 1 metre 10 metres, he ascends in 20 minutes. He reaches the top in 21st minute.
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Put your hand on your chest, when your breathe in, does your chest come out or go in?
On putting the hands on the chest, when I breathed in, my chest comes out.
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Take a deep breath in Ask your friend to measure your chest with a thread. Measurement ….. Now breathe out.
Measurement of the chest on taking a deep breath is 24 cm. Measurement of the chest on taking breath out is 20 cm. Yes, there is a difference in the measurements. The...
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Put your finger under your nose. Can you feel any air when you breathe out from your nose?
Yes, I can feel the air when I breathe out from your nose
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Now again count how many times in one minute your breathed in and out?
On counting after jumping, I breathed in and out for about 26 times.
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The number of times in a day the Hour-hand and the Minute-hand of a clock are at right angles, is
(b) No. of right angles in one hour = 2 ∴No. of right angles in 24 hours = 24 × 2 = 48
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How many times are an hour hand and a minute hand of a clock at right angles during their motion from 1.00 p.m. to 10.00 p.m.?
(c) In one hour, hour hand and minute hand are at right angles 2 times. Time = 10 p.m – 1 p.m = 9 hr. ∴ No. of times, when both hands are...
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How many times the word ‘Jana’ occur in the Rigveda? (a) 75 times (b) 175 times (c) 275 times (d) 375 times
(c) The term ‘Jana’ occurs 275 times in the Rigveda. But Janapada is not mentioned. The term Rajya occurs only once.
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