NEETChemistrySolutions
Given below are two statements; one is labelled as Assertion (A) and the other is labelled as Reason(R). Assertion (A) : Isotonic solutions does not show net phenomenon of osmosis. Reason (R) : Isotonic solution have equal osmotic pressure. In the light of the above statements, choose the most appropriate answer from the options given below :
Options
- ABoth (A) and (R) are correct but (R) is not the correct explanation of (A).
- B(A) is correct but (R) is not correct.
- C(A) is not correct but (R) is correct.
- DBoth (A) and (R) are correct and (R) is the correct explanation of (A).
Correct answer
D. Both (A) and (R) are correct and (R) is the correct explanation of (A).
Step-by-step solution
- Assertion (A): "Isotonic solutions do not show a net phenomenon of osmosis." This is correct because when two solutions are isotonic, there is no net movement of water between them. - Reason (R): "Isotonic solutions have equal osmotic pressure." This is also correct. Isotonic solutions have the same osmotic pressure, preventing the net movement of solvent (osmosis) between them. Since both statements are true and the reason explains the assertion, the best choice is (4).