Question

Identify the correct statement from following.

• A. The vapour pressure of a solvent increases by dissolving nonvolatile solute into it.
• B. The boiling point of solvent decreases by dissolving a nonvolatile solute into it.
• C. The osmotic pressure of electrolytic solution is greater than nonelectrolytic solution of the same concentration.
• D. The freezing point of solvent is a colligative properly.

Hint:

Electrolytes give more particles, so they have a larger colligative effect.

Answer 1

The Correct Option is C

Step 1: Use the van't Hoff factor:
$\pi = iCRT$. For a non-electrolyte $i = 1$, and for NaCl $i \approx 2$.

Step 2: Compare with the options:
(A) and (B) get the direction wrong. (D) names a property, not a change. (C) is consistent with $i > 1$, so (C) is correct.

Final Answer:
Option (C). \[ \boxed{\text{(C)}} \]