A student dissolved 5g of sugar in 100 ml of distilled water in beaker A . She dissolved 100ml g of sugar in 100 ml of distilled water in beaker B . Then she dropped a few raisins of equal weight in each beaker . After two hours she found the raisins in A swollen and those in B shrunken. The inference drawn is tha
a) sugar concentration of raisin is lower than that of solution A and higher than that of solution B
b) sugar concentraion of raisins is higher than that of solution A and lower than that of solution B
c) in B the cell membrane of raisin was damaged resulting in leaching
d) inA the permeab;ity to water of the cell membrane of raisins was enhanced.
Answer : B)
Reason :
A student dissolved 5g of sugar in 100 ml of distilled water in beaker A . She dissolved 100 ml g of sugar in 100 ml of distilled water in beaker B . Then she dropped a few raisins of equal weight in each beaker .
Part : I
After two hours she found the raisins in A swollen.
Swollen indicate the hypotonic nature of solution i.e there is a higher solute concentration within the cell and water moves in raisins . This is called as endosmosis
Part : II
After two hours she found the raisins in B shrunken.
Shrunken indicate the the hypertonic nature of solution i.e solute move out from the raisins to the water and has concentration value of solute lower than that of solution B with in the cell. This is called as exosmosis
Reason :
A student dissolved 5g of sugar in 100 ml of distilled water in beaker A . She dissolved 100 ml g of sugar in 100 ml of distilled water in beaker B . Then she dropped a few raisins of equal weight in each beaker .
Part : I
After two hours she found the raisins in A swollen.
Swollen indicate the hypotonic nature of solution i.e there is a higher solute concentration within the cell and water moves in raisins . This is called as endosmosis
Part : II
After two hours she found the raisins in B shrunken.
Shrunken indicate the the hypertonic nature of solution i.e solute move out from the raisins to the water and has concentration value of solute lower than that of solution B with in the cell. This is called as exosmosis