Long Answer Questions :
Raisins swell in water and grapes shrink in syrup. Explain this phenomenon briefly.

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Solution

Raisins are dried grapes. When they are put in water, the water from the surrounding water diffuses into the raisins, thus the raisins swell up. This is called the endosmosis.
When the grapes are put in sugar water, hypertonic syrup makes the water from the grapes to move out down the concentration gradient. This is called the exosmosis.

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Q. Question 17
Classify the following into osmosis/diffusion
Solution:
1. Swelling up of a raisin on keeping in water.
2. Spreading of virus on sneezing.
3. Earthworm dying on coming in contact with common salt.
4. Shrinking of grapes kept in thick sugar syrup.
5. Preserving pickles in salt.
6. Spreading of smell of cake being bakedthrough out the house.
7. Aquatic animals using oxygen dissolved in water during respiration.

Q. Question 17
Classify the following into osmosis/diffusion
Solution:
1. Swelling up of a raisin on keeping in water.
2. Spreading of virus on sneezing.
3. Earthworm dying on coming in contact with common salt.
4. Shrinking of grapes kept in thick sugar syrup.
5. Preserving pickles in salt.
6. Spreading of smell of cake being bakedthrough out the house.
7. Aquatic animals using oxygen dissolved in water during respiration.

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Long Answer Questions :Raisins swell in water and grapes shrink in syrup. Explain this phenomenon briefly.

Long Answer Questions :
Raisins swell in water and grapes shrink in syrup. Explain this phenomenon briefly.