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प्रश्न
Explain why, when a bottle of perfume is opened in a room, we can smell it even from a considerable distance.
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उत्तर
When a bottle of perfume is opened in a room, the particles of perfume, start diffusing into the air surrounding the bottle. These particles of perfume keep moving towards a region of lower concentration by the virtue of their kinetic energy. Thus, when a bottle of perfume is opened, we can smell perfume even from a distance.
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संबंधित प्रश्न
Give reasons:
A gas exerts pressure on the walls of the container.
Name the physical state of matter which can be easily compressed.
Name two gases which are supplied in compressed form in homes and hospitals.
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.
State two characteristic properties of a gas.
Why do gases have neither a fixed shape nor a fixed volume?
The space between ______ particles is the greatest one.
Comment upon the following:-
rigidity
Explain why?
- A gas fills a vessel completely?
- Camphor disappears without leaving any residue.
Which of the following is TRUE about gaseous state?
