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प्रश्न
Match the following.
| Nitrogen | Respiration in living animals |
| Oxygen | Fertilizer |
| Carbon dioxide | Refrigerator |
| Dry ice | Fire extinguisher |
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उत्तर
| Nitrogen | Fertilizer |
| Oxygen | Respiration in living animals |
| Carbon dioxide | Fire extinguisher |
| Dry ice | Refrigerator |
APPEARS IN
संबंधित प्रश्न
Tick (√) the most appropriate answer.
Which is not a polluting gas for the air?
Statement given below is incorrect. Write the correct statement :
Potassium nitrate on strong heating decomposes into potassium nitrite and nitrogen gas.
State the utility of oxygen for respiration in living organisms
Name the following:
The type of bacteria which directly absorb nitrogen from the air and converted soluble nitrates in the soil.
What happens if the percentage of oxygen in the air reaches to 70%?
Analogy
Photosynthesis : _____ :: Respiration : Oxygen
Nitrogen is _______ than air.
When cooled to -57°C, gaseous carbon-di-oxide becomes a liquid.
______ is necessary for all acids.
Observe the picture given in Fig. carefully and answer the following questions.
Why is he putting a cover on his nose?
