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प्रश्न
Why does a gas fill a vessel completely?
उत्तर
Gases are easily compressible as they have large inter-molecular spaces. The gas particles can come closer to each other when external pressure is applied on gases.
On the other hand, it is almost impossible to compress a liquid because the intermolecular spaces in liquids are small. The particles in a solid are very close to each other. So, they cannot be compressed by applying external pressure.
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संबंधित प्रश्न
Tabulate the differences in the characteristics of states of matter.
Name the physical state of matter which can be easily compressed.
State whether the following statement is true or false :
Red-brown bromine vapour diffuse into air in a gas jar but the colourless air molecules do not diffuse into bromine vapour.
A bottle of perfume was opened in a room. The smell of its vapours spread in the entire room. Name the property of gases which is responsible for this behaviour of perfume vapours.
Fill in the following blank with suitable words :
At room temperature, the forces of attraction between the particles of solid substances are ....................... then those which exist in the gaseous state.
Which of the following diffuses fastest and which the slowest?
Solid, Liquid, Gas Give reasons for your answer.
Name the three states of matter. Give one example of each.
Give reason for the following observation :
The smell of hot sizzling food reaches us even from a considerable distance but to get the smell from cold food, we have to go close to it.
Comment upon the following:-
density
Explain why?
- A gas fills a vessel completely?
- Camphor disappears without leaving any residue.
