Question

Ques- Swelling up of a raisin on keeping in water is osmosis or diffusion?

Ans- Osmosis​

Answer 1

Explanation:

Raisins swells because of osmosis. Solution outside the raisin has a higher concentration of water molecules. Therefore, water from outside enters the raisin through the process of osmosis and hence the raisin swells up when kept in water. The outer membrane of the cells of the raisin acts as a semi-permeable membrane.