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प्रश्न
Define rusting?
उत्तर
Rusting: Slow conversion of iron into its hydrated oxide in the presence of moisture and air is called rusting.
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संबंधित प्रश्न
Fill in the blank:
_____________ discovered the oxygen gas.
Tick (√) the correct alternative from the choice given for the following statement.
Rust is
State what do you understand by the term ‘air’. Explain its importance to mankind.
Describe a simple experiment with the help of a diagram to show that Air is highly compressible
The capacity of air to hold moisture depends upon the ______ of the air.
Water does not have a ______ but has definite ______ and ______.
Air has variable composition and hence there is ______ oxygen at lower altitudes than at higher altitudes.
The layer of air around the earth is known as ______.
Match the following:
| 1. | Layer of air | a. | Hand fan |
| 2. | Electrical energy | b. | 21% |
| 3. | Nitrogen | c. | Windmill |
| 4. | Oxygen | d. | Atmosphere |
| 5. | Palm Trees | e. | 78% |
In a number of musical instruments, air plays an important role. Can you name some such instruments?
