3. Explain your observation in the following with reason involved in the process. (a) Salt is applied to raw mango pieces. (b) Dried raisins are kept in water for a few hours. (c) Rheo leaves are boiled in water and a drop of sugar is added to it.
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ans b) the raisins will swell because of osmosis. The concentration of water is high outside the raisin as compared to inside so water will enter in .
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a) When salt is applied to raw mango pieces, then it will loose water. This happens due exosmosis from the cells in he presence of salt. Water moves out of the cells of mango due to osmosis and hence water is seen on the raw mango pieces.
b) When dried raisins are kept in water, then they swell up by absorbing water.
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