Question

Study the experiment shown below :

After few days, which of the following will have occurred?

• A. A rise in level X and Y
• B. A drop in level X and level Y
• C. A rise in level X and a drop in level Y
• D. A drop in level X and a rise in level Y

Answer 1

The correct option is C A rise in level X and a drop in level Y

The given experiment shows the process of osmosis by using thistle funnel. X and Y are respectively sugar solution and water. After a few days of experiment, sugar level rises and water level drop down. Level of sugar solution in the stem of thistle funnel rises due to the movement of water molecules in thistle funnel through semi-permeable membrane. This demonstrates that the water molecules move from low concentration of solute (from beaker) to the high concentration of the solute (inside thistle funnel).