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प्रश्न
Give a reason why –
Solids have a definite volume & a definite shape.
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उत्तर
Any matter that is solid has a definite shape and a definite volume. The molecules in a solid are in fixed positions and are dose together. Although the molecules can still vibrate, they cannot move from one part of the solid to another part. As a result, a solid does not easily change its shape or its volume.
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संबंधित प्रश्न
Define interconversion of states of matter.
How a liquid changes into its gaseous state ? Explain ?
Give reason for the following.
Pure substances have fixed melting or boiling points.
Fill in the blank:
Any matter which has a definite.................... but no definite shape is called a...............
Match the following
| Column A | Column B |
| (a) Solids | (1) Can flow in all directions. |
| (b) Sublimation | (2) The temperature at which a liquid changes into its gaseous state. |
| (c) Boiling point | (3) Any number of free surfaces. |
| (d) Gases | (4) Gaps between particles. |
| (e) Intermolecular space | ro(5) Change of state fm solid to gas. |
Give reason Liquids can flow easily
Give reasons for the following:
Sugar can be distinguished from talcum powder using water.
Differentiate the general properties of solids, liquids and gases in the form of a table — with reference to mass
Match the characteristics of the three states of matter in List I with their correct answer from List II.
| List I | List II |
| 1. Have no definite shape, volume or free surface | A: Solids only |
| 2. Are highly compressible and least rigid | B: Liquids only |
| 3. Have a definite volume, no definite shape and are slightly diffusable | C: Gases only |
| 4. Are not compressible and have no diffusability | D: Liquids and gases only |
| 5. Have mass and occupy space | E: Solids and gases only |
| F: Solids, liquids and gases |
With reference to the liquid state of matter – answer the following
How does the stored energy, have an effect on inter-particles space.
