An osmometer is filled with $0.5 M$ solution of $N a C l$ in water. In which of the following solutions it must be immersed in order to make it shrink?

0.5 M

solution

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0.05 M

solution

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Distilled water

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0.75 M

solution

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Solution

The correct option is C $0.75 M$ solution
An osmometer is filled with 0.5M solution of NaCl in water. The osmometer should be immersed in a solution with a more concentrated solution.
This hypertonic solution will cause exosmosis. This will result in the shrinkage of the osmometer.
So, the osmometer should be immersed in 0.75 M solution of NaCl. This will allow the flow of water from the osmometer to the outside in the hypertonic solution.
Thus, the correct answer is option D.

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