| Directions: (Q. 21 to 25) |
| Case V: Read the passage given below and answer the following questions. |
| The phenomenon of the flow of solvent through a semipermeable membrane from pure solvent to the solution is called osmosis. |
| Sometimes a pressure is applied to stop the process of osmosis, this is known as osmotic pressure. It is denoted by \[\pi \]. Osmotic pressure is expressed as : \[\pi \] = CRT. |
| Since, osmotic pressure depends upon the molar concentration of solution, therefore it is a colligative property. |
| In the following questions (Q. No. 21-25), a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices on the basis of the above passage. |
| Assertion: If red blood cells were removed from the body and placed in pure water, pressure inside the cells increases. |
| Reason: The concentration of salt content in the cells increases. |
A) Assertion and reason both are correct statements and reason is correct explanation for assertion.
B) Assertion and reason both are correct statements but reason is not correct explanation for assertion.
C) Assertion is correct statement but reason is wrong statement.
D) Assertion is wrong statement but reason is correct statement.
Correct Answer: C
Solution :
If the red blood cells are placed in pure water, pressure inside the cells increases as the water is drawn in and the cell swells.
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