Question

Which is not a colligative property of solution?

• A. Osmotic pressure
• B. Depression in freezing point
• C. Surface tension
• D. Lowering in vapour pressure

Hint:

Colligative properties are used to determine molecular weights of solutes in solutions and are independent of solute type.

Answer 1

The Correct Option is C

Step 1: Understanding Colligative Properties Colligative properties depend only on the number of solute particles in a solution, not their identity. The four main colligative properties are Relative lowering of vapor pressure Boiling point elevation Freezing point depression Osmotic pressure Since surface tension is not influenced by the number of solute particles but by intermolecular forces, it is not a colligative property.