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प्रश्न
Fill in the blank:
Nitrogen of the air is utilized by plants for formation of _____.
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उत्तर
Nitrogen of the air is utilized by plants for formation of proteins.
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संबंधित प्रश्न
Match the statements in Column A, with those in Column B.
| Column A | Column B |
| 1. Largest Constituent of air, which dilutes the activity of oxygen. | (a) Oxygen |
| 2. A gas used for filling weather observeation balloons. | (b) Carbonic acid |
| 3. An acid formed by the dissolution of sulphur dioxide gas in water. | (c) Sulphuric acid |
| 4. An acid formed by the dissolution of carbon dioxide in water. | (d) Helium |
| 5. A gas vital for respiration. | (e) Nitrogen |
Why can’t we see air?
Define the following:
Respiration
Name the processes which maintain the balance between oxygen and carbon dioxide in the air. How is it done?
What is air pollution?
Tick (√) the correct alternative from the choice given for the following statement.
Rust is
What will happen if the amount of water vapour in the air increases.
Name the important scientists and their studies which led to the discovery of the components of air.
Take a squeezable bottle. Make a hole on the lid and close the bottle tightly. Bring the bottle near your face and press the bottle. What do you feel?
Make sentences using the given set of words.
Air, wind, motion, called
