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प्रश्न
Describe a simple experiment with the help of a diagram to show that Air occupies space
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उत्तर
Air occupies space
- Press an inverted glass
- Tilt the tumbler to one side, tumbler over the water.
Observation: On tilting the tumbler, bubbles of air are seen coming out. Water slowly enters the tumbler to take place of the trapped air in the tumbler.
Conclusion: Air occupies space (the space in the tumbler was occupied by air).
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 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 |
Write the chemical name of Lime water
Name two air pollutants which affect our health.
What is meant by ozone depletion?
Fill in the blank
Although we cannot see air, we can ___it.
Write ‘true’ or ‘false for the following;
Air is a compound.
Name the important scientists and their studies which led to the discovery of the components of air.
Mention two uses 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?
Cool and soothing wind: Breeze.
uproot trees wind: ______.
