A few grains of table salt were put in a cup of cold water, kept at a constant temperature and left undisturbed. Eventually all the water tasted salty. This action is due to  - TEEZAB

A few grains of table salt were put in a cup of cold water, kept at a constant temperature and left undisturbed. Eventually all the water tasted salty. This action is due to 

Jamb 1978

A few grains of table salt were put in a cup of cold water, kept at a constant temperature and left undisturbed. Eventually all the water tasted salty. This action is due to 

A. Convection

B. Osmosis

C. Capillarity

D. diffusion

E. Conductivity

ANSWER: Option  D

EXPLANATION:  I think by now, you must understand that option A and E. They are not even close to the answer as those are concerned with heat transfer.

Capillarity is the rise or depression of a liquid in a small passage such as a tube of small cross-sectional area, like the spaces between the fibers of a towel or the openings in a porous material.

Diffusion is the process resulting from random motion of molecules by which there is a net flow of matter from a region of high concentration to a region of low concentration.

Osmosis is the spontaneous passage or diffusion of water or other solvents through a semipermeable membrane.

I think you understand the difference between Osmosis and diffusion now? Ok, on to the next question.

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