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Why does the amount of oxygen vary betwe...

Why does the amount of oxygen vary between exhaled and inhaled air ?

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Because some amount of oxygen will be utilised during cellular respiration in the body. Hence the difference in amount of oxygen occurs.
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VGS PUBLICATION-BRILLIANT-RESPIRATION - THE ENERGY PRODUCING SYSTEM -QUESTION GIVEN IN THE LESSON (1 MARK QUESTIONS)
  1. What didi Lavoisier find out about air from the experiments ?

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  2. What conclusion can be drawn from Lavoisier's experiments ?

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  3. Which gas do you think is Lavoisier talking about when he says chalky ...

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  4. Which gas according to Lavoisier is respirable air ?

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  5. It is a common observation that our breath is warmer than the air arou...

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  6. What does this experiment indicate ?

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  7. Which gas turns lime water milky ?

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  8. Which gas to do think might be present in greater quantities ?

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  9. We are also aware of the fact that water vapour deposits on a mirror i...

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  10. Why are we advised not to talk while eating food ?

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  11. What can be concluded from this?

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  12. What happens during the process of breathing?

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  13. Which gas needs to be removed from our body during exhalation? Where d...

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  14. What is the composition of inhaled air?

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  15. When exhaled air is compared with inhaled air, is there any difference...

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  16. Why does the amount of oxygen vary between exhaled and inhaled air ?

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  17. What has raised the percentage of carbon dioxide in exhaled air?

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  18. After undergoing strenuous exercise we feel pain in muscles, does adeq...

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  19. What is being formed in the muscles ?

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  20. In which set does the colour change faster ? Why ?

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