Question

Assertion : Osmosis does not take place in two isotonic solutions separated by semipermeable membrane.
Reason : Isotonic solutions have same osmotic pressure.

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both assertion and reason are true but reason is not the correct explanation of assertion
• C. If assertion is true but reason is false
• D. If both assertion and reason are false

Answer 1

Answer: (A)

It could be the movement of water (osmosis), or other (diffusion). If a cell is placed in an isotonic solution, that means the amount of stuff inside the cell and outside the cell is equal.There will be some movement of water and salt across the cell membrane, but there will be no net concentration change.