Question

raisins swell after keeping in plan water : give reasons​

Answer 1

Answer:

A phenomenon called endosmosis takes place when raisins are placed in water for few hours. When raisins are soaked in water, they swell. All this is due to the process of osmosis. The water molecules pass the cell membrane of the raisins and the raisins thus get swollen.

Answer 2

Answer:

Explanation:

It is because it as an hypotonic solution...

i.e .. the content of water is less inside the raisin than the water content of the solution (plain water here) .. so due to osmosis the water from the solution goes inside the raisin which makes it swell.

:D