Question

Give reason for the following observations:

(a) Naphthalene balls disappear with time without leaving any solid.

(b) We can get the smell of perfume while sitting several metres away.​

Answer 1

Answer:

(a)Naphthalene balls undergo sublimation process due to which after a long time the solid balls disappear into gases.

(b)Gases travel faster than liquids and solids and gases can be diffused easily. Due to this diffusion process we are able to smell the perfume .

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