What is the difference between mass flow and diffusion?

What is the difference between mass flow and diffusion?
  1. Mass flow is faster and diffusion is slower
  2. Diffusion is dependent on concentration gradients
  3. Mass flow is dependent on concentration differences
  4. Both mass flow and diffusion are dependent on pressure differences

Solution

Diffusion is the movement of substances from an area of higher concentration to an area of lower concentration. In diffusion, different substances move independently depending on their concentration gradients. Mass flow is the movement of substances in bulk or en masse from one point to another as a result of pressure differences between the two points.

Asked in: NCERT

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