Tuesday, 26 April 2016

Amit chauhan

CHAPTER = FUNDAMENTAL UNIT OF LIFE

Q. Why does the water come out from the cucumber when we add salt in it?
Ans Osmosis is the diffusion of a solvent (frequently water) through a semi-permeable membrane, from a solution of low solute concentration (high water potential) to a solution with high solute concentration (low water potential), up a solute concentration gradient 

The cells of the cucumber have low salt conent while the water around it has high salt content. Therefore, to get a balance, water is drawn out from the cucumber. 

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