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प्रश्न
State three properties of molecules of a matter.
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उत्तर
- They are very small in size.
- They have spaces between them.
- They are in constant motion and they possess kinetic energy.
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संबंधित प्रश्न
The temperature of a substance remains unaffected during its change of state.
Evaporation takes place at ...............temperature.
Fill in the blank
The inter-molecular forces are the weakest in ...............
Fill in the blank
Water boils at .............
Fill in the blank
When a gas is cooled, its molecules .............. energy.
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.
The intermolecular force of attraction is the weakest in gases.
One kind of matter can be distinguished from another by its physical properties and chemical properties.
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 |
Gas like the state of Matter that exists at extremely cold temperatures used in the field of cryogenics.
