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प्रश्न
What should be done if the clothes of a person catch fire accidentally? Why?
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उत्तर
- Cover the person in a rug or blanket and Roll him on the floor.
- This will cut off the air and put out the flames.
- A suitable fire extinguisher can also be chosen.
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संबंधित प्रश्न
Fill in the blank:
_____________ discovered the oxygen gas.
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What do you observe when Carbon dioxide gas is passed through lime water.
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Respiration
What is the importance of air in transmission of sound?
Draw a neat labelled diagram for the following experiment.
To study the presence of carbon dioxide in air.
State whether the following statement is true or false. If false, correct them.
Air does not occupy any space.
In a number of musical instruments, air plays an important role. Can you name some such instruments?
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 |
