Question 3 (b)
Give reason for the following observations.
b. We can get the smell of perfume sitting several metres away.

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Solution

b. Perfume has the higher degree of vaporization and its vapour diffuse into air easily. Gaseous particles possess high speed and move very rapidly in all directions. When perfume is sprayed, its particles diffuse into the particles of air at a very fast rate and reach our nostrils. This enables us to smell the perfume from a distance.

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