Multiple choice

Which of the following will happen when dry raisins are left for some time in pure water and later into salt solution?

  1. Raisins first swell up and shrink later.

  2. Raisins first shrink and swell later.

  3. No effect on raisins first, but they swell later

  4. No effect on raisins

  5. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This is the correct answer because when raisins are put into pure water, the concentration inside raisins of water is less. Due to this, water from outside penetrates the raisins and they swell up. When they are put inside the salt solution, concentration of water is more inside than outside. Thus, water penetrates outside the walls of the raisins and they shrink.

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