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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
“Air is a mixture”. Support this statement citing at least three evidences.
Fill in the blank :
________ is the most abundant inert gas present in air.
Briefly state the importance of Carbon dioxide.
Briefly state the importance of Water vapour.
State whether the following statement is ‘true’ or ‘false’. If false write the correct statement.
The mesosphere in the atmosphere, contains most of the air, fit for respiration
State four different properties of a compound and a mixture.
Classify the following.
( Dog, Cat, coconut tree, monkey, brinjal plant, papaya plant)
| Things which give out oxygen | Things which give out carbon dioxide |
How do the roots of land plants get oxygen for breathing?
The composition of air changes slightly from place to place. Give examples.
Match the following
| 1. | Oxygen | a. | Carbon dioxide |
| 2. | Azote | b. | Nitrogen |
| 3. | Solvay process | c. | Vital life |
| 4. | Gun powder | d. | No life |
