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प्रश्न
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?
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उत्तर
Air will come rushing out of the bottle.
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संबंधित प्रश्न
How is greenhouse effect produced?
Give two uses of the following component present in air:
carbon dioxide
Give two uses of the following component present in air:
water vapour
Tick (√) the correct alternative from the choice given for the following statement.
Photosynthesis is a process in which plants
What is meant by the term ‘atmosphere’? State the role played by the atmosphere for the survival of mankind.
State whether the following statement is true or false.
The pressure exerted by air is called atmospheric pressure.
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 demonstrate the burning of sulphur in a jar of oxygen.
Mention two uses of air.
List five activities that are possible due to the presence of air.
