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प्रश्न
A list of words is given in a box. Use appropriate words to fill up the blank in the following statement.
Air is a ______ of some gases.
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उत्तर
Air is a mixture of some gases.
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संबंधित प्रश्न
Name the processes which maintain the balance between oxygen and carbon dioxide in the air. How is it done?
Describe a simple experiment with the help of a diagram to show that Air has mass
Explain Lavoisier’s experiment which provided evidence to the discovery of components in air.
Match the statements in List I with the correct answer from List II.
| List I | List II |
| 1. The constituent of air which is around 0.02% | A: Nitrogen |
| 2. The constituent of air which is inert or unreactive | B: Oxygen |
| 3. The constituent of air which is non-combustible, but supports combustion. |
C: Sulphur dioxide |
| 4. A pollutant in air responsible for acid rain | D: Carbon dioxide |
| 5. The main rare gas present in air. | E: Argon |
Draw a neat labelled diagram for the following experiment.
To prove that oxygen is non-combustible, but supports combustion.
Draw a neat labelled diagram for the following experiment.
To demonstrate the burning of sulphur in a jar of oxygen.
Name a device which uses wind energy to generate electricity.
The composition of air is always exactly the same.
Make sentences using the given set of words.
Air, wind, motion, called
Paheli kept some water in a beaker for heating. She observed that tiny bubbles appeared before the water started to boil. She boiled the water for about 5 minutes and filled it in a bottle up to the brim and kept the bottle air tight till it cooled down to room temperature.
Why did the tiny bubbles appeared?
