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प्रश्न
Fill in the blank
The gases are .......... dense.
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उत्तर
The gases are least dense.
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संबंधित प्रश्न
The temperature of a substance remains unaffected during its change of state.
Evaporation of a liquid causes cooling.
Evaporation takes place at ...............temperature.
Write whether the following statement is true or false.
If the container in which a gas is collected has an opening, the gas will flow out and spread itself indefinitely.
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.
For the following statement, say whether it describes a solid, a liquid, or a gas.
Particles are far apart and move in all directions.
Name the phenomenon which cause the following change.
Formation of water vapour from water.
Explain the term ‘matter'
State the property of the following substance.
Sulphur is a yellow amorphous powder insoluble in water.
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 'X' | A: Condensation |
| 2. Liquid 'Y' to its vapour 'Z' | B: Vaporization |
| 3. 'Z' to 'Y' | C: Melting |
| 4. 'Y' to 'X' | D: Freezing |
| 5. The temperature at which 'Y' changes to 'Z' | E: Melting point |
| F: Boiling point |
