Question

Give reasons of the following (i) Napthalene balls disappear in air completely with respected to time (ii) we can get the smell of perfume even it is in several meters away.

Answer 1

hey mates here is ur answer

(a) Naphthalene balls undergo sublimation due to which it converts directly into vapours and disappear into air without leaving any solid.


(b) The particles of perfume diffuse rapidly into the air and its smell can be felt while sitting several metres away.

Answer 2

naphthalene balls disappear in air completely is respectively time because of sublimation sublimation means direct solid state to gaseous state
who is that the smell of perfume even it is in several metres away because of diffusion