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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 fills completely the vessel in which it is kept.
Name the physical state of matter which can be easily compressed.
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.
A girl is cooking some food in the kitchen. The smell of food being cooked soon reaches her brother's room. Explain how the smell could have reached her brother's room.
What does the diffusion of gases tell us about their particles?
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:-
shape
Which of the following is false for gases?
Which of the following is TRUE about gaseous state?
