Question

(D
Give reason for the following observations (a) Naphthalene balls disappear with time without leaving any solid. (b) we can get the smell of purfume sitting several metres away​

Answer 1

Answer:

a) Naphthalene balls disappear with time without leaving any solid because they undergo sublimation i.e., they directly change into vapour without passing through the liquid state. ... The perfumes contain solvent which carries pleasant smelling vapour.

b) Molecules with higher kinetic energy diffuses quicker. That is the reason we can smell the perfume sitting several meters away.

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