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प्रश्न
What is meant by 'diffusion'? Give one example of diffusion in gases.
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उत्तर
Diffusion: In Latin, the word “diffusion” means to “spread out”. Diffusion is the mixing of a substance with another substance due to the motion of its particles. It is one of the several transport phenomena that occur in nature. The spreading of the smell of perfume in the whole room is an example of diffusion.
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संबंधित प्रश्न
Give reasons:
Solids cannot be compressed.
Give reason for the following.
Pure substances have fixed melting or boiling points.
Name the phenomenon which cause the following change:
Conversion of water into steam.
Give reason of Liquids have definite volume but no difinite shape.
Give reason
A red ink drop added to small amount of water in a glass turns water red in some time.
Give reasons for the following:
A bottle of perfume on opening evolves an odour which can be sensed over a long distance.
On what basis are the three states classified of matter.
State in which of the three states of matter:
The force of attraction between the particles is very weak.
Give a reason for the following:
Liquids have one free upper surface only.
In a glass containing some water, tamarind juice and sugar are added and stirred well. Is this a mixture? Can you tell why? Will this solution be sweet or sour or both sweet and sour?
