Question

Based on the figure given below, which of the following statements are not correct? \includegraphics[width=0.4\linewidth]{2image.png}

• A. Movement of solvent molecules occur from chamber A to B
• B. Movement of solute molecules occur from chamber A to B
• C. Semipermeable membrane is prerequisite for the process
• D. Rate of osmosis depends on pressure gradient and concentration gradient of solutes

Hint:

Osmosis is a passive transport process where solvent molecules move from low solute concentration to high solute concentration through a semi-permeable membrane.

Answer 1

The Correct Option is B

Understanding the concept of osmosis
- The given figure represents osmosis, where a semi-permeable membrane separates two chambers (A and B).
- Osmosis is the movement of solvent molecules (e.g., water) across a semi-permeable membrane from a region of low solute concentration (hypotonic solution) to a region of high solute concentration (hypertonic solution).
Evaluating the given statements
- Option (1): Movement of solvent molecules occur from chamber A to B → Correct
- Solvent molecules move across the semi-permeable membrane from low solute concentration (A) to high solute concentration (B), which aligns with osmosis.
- Option (2): Movement of solute molecules occur from chamber A to B → Incorrect
- Solute molecules do not pass through a semi-permeable membrane in osmosis; only solvent molecules move.
- This statement is incorrect, making it the correct answer.
- Option (3): Semipermeable membrane is prerequisite for the process → Correct
- A semi-permeable membrane is essential for osmosis as it allows only solvent molecules to pass through while restricting solute movement.
- Option (4): Rate of osmosis depends on pressure gradient and concentration gradient of solutes → Correct
- Osmosis is influenced by the osmotic pressure gradient and solute concentration gradient, making this statement correct.
Conclusion Since only solvent molecules move across the membrane and not solute molecules, Option (2) is incorrect, making it the right answer.