Question

Assertion: Osmotic pressure of a dilute solution is inversely proportional to its concentration provided temperature remains constant.

Reason: Osmotic pressure is a colligative property and depends upon the number of moles of solute dissolved in a definite volume of the solution.

Options

• If both Assertion and Reason are CORRECT and Reason is the CORRECT explanation of the Assertion.

• If both Assertion and Reason are CORRECT but Reason is not the CORRECT explanation of the Assertion.

• If Assertion is CORRECT but Reason is INCORRECT.

• If Assertion is INCORRECT but Reason is CORRECT.

Answer 1

If Assertion is INCORRECT but Reason is CORRECT.

Explanation:

The assertion is incorrect because osmotic pressure is directly proportional, not inversely, to the concentration of the solution at constant temperature, as per the equation π = CRT. However, the reason is correct; osmotic pressure is a colligative property and depends on the number of solute particles in a given volume.