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Direction: Two beakers A and B contain plain water and concentrated sugar solution respectively. Equal number of dry raisins are kept in them for a few hours and then taken out.
Q. In beaker B, the raisins will_____
  • a)
    Swell
  • b)
    Shrink
  • c)
    Remains the same
  • d)
    First shrink and then swell
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Direction: Two beakers A and B contain plain water and concentrated s...
In beaker B, raisins will Shrink because water concentration is less outside the cell membrane, so more water comes out of the membrane than enters.
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Most Upvoted Answer
Direction: Two beakers A and B contain plain water and concentrated s...
**Explanation:**

When raisins are placed in a liquid, they undergo a process called osmosis. Osmosis is the movement of water molecules from an area of lower concentration to an area of higher concentration through a semi-permeable membrane.

In this case, beaker A contains plain water and beaker B contains a concentrated sugar solution. The concentration of water molecules is higher in beaker A compared to beaker B. Therefore, water molecules will move from beaker A to beaker B through the raisins in an attempt to equalize the concentration.

**Swell:**
When water molecules move into the raisins, they will absorb the water and swell. This is because the raisins have a lower concentration of water compared to the surrounding liquid.

**Shrink:**
On the other hand, when water molecules move out of the raisins, they will lose water and shrink. This is because the raisins have a higher concentration of water compared to the surrounding liquid.

**Remain the same:**
If the concentration of water inside the raisins is already equal to the concentration of water in the surrounding liquid, there will be no net movement of water molecules and the raisins will remain the same size.

**First shrink and then swell:**
In some cases, the raisins may initially shrink as water molecules move out of the raisins to equalize the concentration. However, as the concentration of water inside the raisins decreases, the concentration gradient between the raisins and the surrounding liquid decreases. Eventually, water molecules may start moving into the raisins, causing them to swell.

Therefore, in beaker B containing the concentrated sugar solution, the raisins will initially shrink as water molecules move out of the raisins to equalize the concentration. However, as the concentration gradient decreases, the raisins may start absorbing water and swell. Thus, the correct answer is option B: Shrink.
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Direction: Two beakers A and B contain plain water and concentrated sugar solution respectively. Equal number of dry raisins are kept in them for a few hours and then taken out.Q. In beaker B, the raisins will_____a)Swellb)Shrinkc)Remains the samed)First shrink and then swellCorrect answer is option 'B'. Can you explain this answer?
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Direction: Two beakers A and B contain plain water and concentrated sugar solution respectively. Equal number of dry raisins are kept in them for a few hours and then taken out.Q. In beaker B, the raisins will_____a)Swellb)Shrinkc)Remains the samed)First shrink and then swellCorrect answer is option 'B'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Direction: Two beakers A and B contain plain water and concentrated sugar solution respectively. Equal number of dry raisins are kept in them for a few hours and then taken out.Q. In beaker B, the raisins will_____a)Swellb)Shrinkc)Remains the samed)First shrink and then swellCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction: Two beakers A and B contain plain water and concentrated sugar solution respectively. Equal number of dry raisins are kept in them for a few hours and then taken out.Q. In beaker B, the raisins will_____a)Swellb)Shrinkc)Remains the samed)First shrink and then swellCorrect answer is option 'B'. Can you explain this answer?.
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