The osmotic pressure of a solution can be increased by :
Increasing the number of solutes
The correct option A.
Explanation of the correct option:
Option A:
Explanation of the incorrect options:
Option B:
The osmotic pressure of a solution does not depend on the volume of the vessel. Hence, increasing the volume will not have any effect on the osmotic pressure.
Option C:
The osmotic pressure of a solution will not be increased upon removing the semipermeable membrane.
Option D:
The temperature rises in direct proportion to how quickly water molecules pass through the semipermeable barrier. Therefore decreasing the temperature will not increase the osmotic pressure.
Final answer: The osmotic pressure of a solution can be increased by increasing the number of solutes.