Question

What di you mean by effusion ? Why do we observe smell when perfume bottle is opened in a room ?

Answer 1

Diffusion: the intermixing of particles is known as diffusion.

when a bottle of perfume is open the particles of perfume get mixed with the particles of air and spread and reach us even at a distance . this process is called diffusion.

Answer 2

Answer:

Diffusion is the spreading - mixing of gases through molecular motion. A bottle of perfume is apened. in the entire room due to diffusion. Even if one opens a '' bottle of perfume '' in a '' room '', we can smell it from a considerable distance.