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प्रश्न
Fill in the blank
Water boils at .............
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उत्तर
Water boils at 100 °C.
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संबंधित प्रश्न
What is meant by the intermolecular forces of attraction? How do they vary in solids, liquids and gases?
Fill in the blank
The inter-molecular forces are the weakest in ...............
Give the molecular model for a solid and use it to explain why a solid has a definite volume and a definite shape.
Give reason :
Liquids have a definite volume but no definite shape.
Fill in the blank
Water is a matter because it has ............ and occupies ............
Fill in the blank
Liquids have no definite ...........
Write whether the following statement is true or false
All solids, on heating, first change to the liquid and then to the gaseous state always.
Write whether the following statement is true or false.
Intermolecular force of attraction is greater in gases than in liquids.
Name the three states of matter and define them.
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 |
