This statement accurately describes the phenomenon of osmosis and the concept of osmotic pressure. Osmosis is the movement of water across a semipermeable membrane from a region of higher water potential (or lower solute concentration) to a region of lower water potential (or higher solute concentration). Applying pressure to the solution increases its water potential. The pressure required to prevent the net movement of water into the solution across the semipermeable membrane is defined as the osmotic pressure of the solution.
Which one of the following statements is correct?
Asked in UPPCS Prelims 2002 · Topic: Physical and Chemical Changes, Solution (Saturated, Unsaturated, and Supersaturated Solutions)
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Answer: D. When a solution is separated from water by a semi permeable membrane, water movement can be prevented by applying pressure to the solution
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