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प्रश्न
Name the phenomenon which causes the Conversion of water into steam is
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उत्तर
Conversion of water into steam is boiling.
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संबंधित प्रश्न
Give reason Pure substances have fixed melting or boiling point .
Write true or false for each statement. Rewrite the false statement correctly.
Solids can be compressed easily.
Match the following columns
| Column A | Column B | ||
| A. | A molecule is composed of | i. | does not exist free in nature. |
| B. | Ice, water and water vapour | ii. | can vibrate only up to about `10^-10`m from their mean position. |
| C. | An atom | iii. | atoms. |
| D. | Gases | iv. | are the three states of water. |
| E. | The molecules of a solid | v. | occupy space |
Describe a simple experiment to illustrate that molecules are not at rest, but they constantly move.
Give reason :
We can walk through air.
Solids retain their volume even when external pressure is applied. This property is called ______.
Identify the odd term out and explain.
Identify the odd term out and explain.
Write a scientific reason.
Lemon sherbat has a sweet, sour and salty taste and it can be poured in a glass.
State the correct term from A, B, C, D, E or F in List II which represents the – change of state of matter or its relevant property from List I
| List I | List II |
| 1. Solid 'X' to a liquid 'Y' | A: Liquefaction |
| 2. Liquid 'Y' to its vapour 'Z' | B: Vaporization |
| 3. 'Z' to 'Y' | C: Melting |
| 4. 'Y' to 'X' | D: Solidification |
| 5. The temperature at which 'Y' changes to 'Z' | E: Melting Point |
| F: Boiling point |
