Question

Which of the following is a colligative property?

• A. Surface tension
• B. Osmotic pressure
• C. Optical rotation
• D. Viscosity

Answer 1

The correct option is B Osmotic pressure

$\text{Colligative properties- The properties that depend upon the ratio of the number of solute}$$\text{molecules and total molecules not upon the nature of solute molecules named as colligative properties.}$

Example- $Osmoticpressure,$ elevation of boiling point, depression in freezing point and relative lowering of vapour pressure.

Hence, option B is correct.