Question

Why do raisins sweep up in water

Answer 1

Raisins are dried grapes. When they are placed in water, the water from the surrounding diffuses into the raisins and so the raisins swell up. The phenomenon involved is called osmosis. b) When swollen raisins are placed in concentrated sugar solution, they will shrink.

Answer 2

The process of absorption of water by raisins and swelling up is called osmosis. Osmosis is the movement of solvent molecules from a region of their higher concentration to a region of their lower concentration through a semipermeable membrane. When raisins are soaked in water, they swell.

It is swell not sweep