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Osmosis in Selectively Permeable Membrane

Raisins shrin...

Question

Raisins shrink in sugar solution give reason

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Solution

A raisin, when put in a sugar solution (or any other concentrated solution), loses water by exosmosis and consequently shrinks. This happens due to osmosis.
Osmosis is the passage of water from a region of high water concentration to a region of lower water concentration.

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Q. If raisins are kept in .......... solution, they will shrink.

Q. A Student dissolved 5 g of sugar in 100 mL of distilled water in beaker A. He dissolved 100 g of sugar in 100 mL of distilled water in beaker B. Then he dropped a few raisins of equal weight in each beaker. After two hours he found the raisins in A swollen and those in B shrunken. The inference drown is that:
(1) sugar concentration of raisins is lower than that of solution A and higher than that solution B.
(2) sugar concentration of raisins is higher that that of solution A and lower that that of solution B.
(3) in B the cell membrane of raisins was damaged resulting in bleaching.
(4) in A the permeability of water of the cell membrane of raisins was enhanced

Q. Dry raisins are soaked in pure water and later transferred into a sugar solution which of the following statements correctly describes the changes observed in raisins?

Dry raisins are left for sometime inn pure water and later transfered to sugar solution.

Give reasons.

Raisins soaked in water swell up after some time.

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Osmosis in Selectively Permeable Membrane

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