Respected sir/mam, 
I didn't undsrstood that what is diffusion and for what is it's function? Can you explain me with an example please?

Asked by ranksahoo | 14th Dec, 2017, 08:29: PM

Expert Answer:

Diffusion is a process by which the molecules move from a region of higher concentration to a region of lower concentration.

It should be noted that diffusion is different from osmosis as osmosis exclusively includes movement of water, whereas diffusion involves the movement of particles generally through a membrane.
The following example explains the significance of diffusion of gases in water :
       Breathing :
  • While we breathe in, the oxygen from the air which we breathe diffuses from the lungs to the bloodstream.
  • The oxygen which was breathed in the gaseous state is now in the liquid state mixed in the bloodstream. 
  • Thus making diffusion of gases in liquid (oxygen gas from our lungs to the bloodstream) one of the essential phenomena 

Answered by Sivanand Patnaik | 15th Dec, 2017, 08:10: AM