62. When a bottle of perfume is opened in one corner of a room the smell spreads soon throughout the room. This is an example of A.Surface tension B.Capillarity C.Viscosity D.Diffusion
Option D Solution: When a bottle of perfume is opened in a corner of a room, the scent soon spreads all over the room. This physical procedure is called diffusion, due to which the liquid or gaseous molecules travels from the area of higher density to that of the lower density of that substance.
