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प्रश्न
Give the molecular model for a solid and use it to explain why a solid has a definite volume and a definite shape.
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उत्तर
Here the molecules are very tightly packed that there is no or very less intermolecular space and there is a high intermolecular force of attraction (force of cohesion).
The molecules do not move about their mean position and thus solids have a definite shape and volume.
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संबंधित प्रश्न
Write true or false for the following statement
In a gas, the molecules can move anywhere in space.
Write true or false for the following statement
The liquids are less viscous than the gases.
Fill in the blank
A solid exerts pressure .....................
How do the solids, liquids, and gases differ in their following properties.
(a) Size
(b) Shape
(c) Density
Distinguish between the three states of matter—solid, liquid, and gas on the basis of their molecular models
Give a reason for the Pure substances have fixed melting or boiling points.
Write true or false for the statement. Rewrite the false statement correctly.
If the intermolecular space is more than the intermolecular force will be weaker.
Multiple choice question.
A solid is a state of matter that has
Complete the statement given below by selecting the correct word.
The conversation of vapour into a liquid is called ____.
Match the characteristics of the three states of matter in List I with their correct answer from List II.
| List I | List II |
| 1. Are highly rigid and have a definite shape | A: Solids and gases only |
| 2. Have no definite shape | B: Solids only |
| 3. Have definite volume but no definite shape | C: Liquids and gases only |
| 4. Are highly compressible and least rigid | D: Gases only |
| 5. Have no definite volume | E: Solid, liquids and gases |
| 6. Have no definite shape and volume |
F: liquids only |
| 7. Occupy space | G: Solids and liquids only |
| 8. Are not compressible | |
| 9. Are slightly compressible | |
| 10. Have mass |
