In a closed room of 1000 m3, a perfume bottle is opened up. The whole room develops smell. This is due to which property of gases ?

The gaseous particles are in constant state of motion randomly in all directions and in straight line. The dispersion of gas molecules throughout the container is called diffusion. When the perfume bottle is opened up, it consists of highly volatile gases and diffuse in the entire room rapidly. Thus, the whole room develops smell. Thus, the correct option is (c) Diffusion