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प्रश्न
Describe a simple experiment with the help of a diagram to show that Air exerts pressure
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उत्तर
Air exerts pressure
- Take an open can, fill it with water, and heat it. On the formation of steam, place the cap on tightly and keep the can aside.
Observation: On condensation of the steam the pressure inside the can reduce. The air outside exerts pressure on the can which crumples slowly.
Conclusion: Air exerts pressure.
संबंधित प्रश्न
Write the chemical name of The white insoluble solid formed on the reaction of carbon dioxide with lime water.
Give two uses of the following component present in air:
water vapour
Tick (√) the correct alternative from the choice given for the following statement.
Respiration
Water does not have a ______ but has definite ______ and ______.
Why is it said that-
Air is a homogeneous mixture of various gases.
Air has variable composition and hence there is ______ oxygen at lower altitudes than at higher altitudes.
Draw a neat labelled diagram for the following experiment.
To prepare oxygen in the laboratory from hydrogen peroxide and a catalyst.
What is wind energy?
List five activities that are possible due to the presence of air.
Match the items of Column I with the items of Column II
| Column I | Column II | ||
| (a) | Weather cock | (i) | Gases and fine dust particles |
| (b) | Mountaineers | (ii) | Sailing yacht |
| (c) | Fine hair inside the nose | (iii) | Oxygen cylinders |
| (d) | Smoke | (iv) | Direction of air flow |
| (e) | Wind | (v) | Prevent dust particles |
