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Question

Osmosis involves the diffusion of


A

Suspended particles from lower to higher concentration

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B

Suspended particles from higher to lower concentration

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C

Water from more concentrated solution to less concentrated solution

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D

Water from the less concentrated solution to the more concentrated solution

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Solution

The correct option is C

Water from more concentrated solution to less concentrated solution


The correct option is C:

Explanation of the correct option:

  1. Osmosis is a continuous diffusion of water molecules in living organisms from a region of higher concentration to a region of lower concentration through a semi-permeable membrane.
  2. The process continues until the concentration of the solution becomes equal on both sides of the membrane. In other words, osmosis continues till the state of equilibrium is reached.
  3. It is a relatively slow process in comparison to diffusion and occurs only when solutions are of uneven concentration.

Explanation of incorrect options:

Option A:

Osmosis follows the principle of equilibrium where in order to make the concentration of both the solutions equal water must travel from a region of higher concentration to a region of lower concentration.

Option B:

Suspended particles mostly constitute a solute whereas osmosis occurs when molecules of solvent pass through a region of higher to lower concentration in a solution.

Option D:

The direction of travel of water is incorrect as water passes from a region of higher concentration to lower concentration.

Final answer: Osmosis is the diffusion of water from more concentrated solution to less concentrated solution.


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