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प्रश्न
Of the total volume of air – 4/5th is nitrogen. State the utility or consequence of this ratio.
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उत्तर
The consequence of having 1/5 oxygen and 4/5 nitrogen in air would have been that earth would not have supported this kind of live and there would have been no balance of air and no photosynthesis.
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संबंधित प्रश्न
Give two examples of modern fuels.
Write ‘true’ or ‘false for the following;
Carbon dioxide is given out during photosynthesis
State the utility of oxygen for respiration in living organisms
Name the following:
The active component of air which supports combustion and is used up in burning
_______ can be seen moving in a beam of sunlight in a dark room.
Inhaled air contains a large amount of carbon-di-oxide.
Arrange the following statements in correct sequence
- Plants manufacture food by a process called photosynthesis.
- Plants require energy for their growth.
- Plants take in oxygen and release carbon dioxide just as animals.
- Plants take carbon dioxide from the atmosphere, use chlorophyll in the presence of sunlight and prepare food.
- Such oxygen is available to animals and human beings for breathing.
- During this process, oxygen is released by plants.
How to show the presence of carbon-di-oxide in the air?
A ______ gas that is used to remove carbon impurities from the steel.
Nitrogen is about two times more soluble in water than oxygen.
