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When kept in water, raisin swells in size. Name and explain the phenomenon involved with the help of a diagram. Give three applications of the phenomenon.
Answers (1)
Raisins swell in water due to osmosis. Water moves from a place of lower concentration (Water holder) to higher concentration (Raisin) through the skin of raisin which acts as a semipermeable membrane.
Applications of the phenomenon
- Water moves from soil to plant roots partly due to osmosis.
- Preservation of meat against bacterial action by adding salt.
- Preservation of fruits against bacterial action by adding sugar. Bacterium in canned fruit loses water through the process of osmosis, shrivels, and dies.
- Reverse osmosis is used for desalination of water.
View full answer
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