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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
Mention the contribution of the following scientists :
- Antoine Lavoisier
- Robert Boyle
- Joseph Priestley
- Sir W. Ramsay
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 observation balloons. | (b) carbon acid |
| 3. An acid formed by the dissolution of sulphur dioxide gas in water. | (c) Sulphur acid |
| 4. An acid formed by the dissolution of carbon dioxide in water. | (d) Helium |
| 5. A gas vital for respiration. | (e) Nitrogen |
Define the following:
Respiration
Name three greenhouse gases.
Tick (√) the correct alternative from the choice given for the following statement.
Respiration
Tick (√) the correct alternative from the choice given for the following statement.
Which of the following is not a greenhouse gas?
Describe a simple experiment with the help of a diagram to show that Air is highly compressible
What is wind energy?
What should be done if the clothes of a person catch fire accidentally? Why?
A list of words is given in a box. Use appropriate words to fill up the blank in the following statement.
The ______ makes the windmill rotate.
