Question

Among the following, the incorrect statement about colloids is:

• A. They can scatter light
• B. They are larger than solute molecules in solution and have high molar mass
• C. The osmotic pressure of a colloidal solution is of higher order than the true solution at the same concentration
• D. The range of diameters of colloidal particles is between $1$ and $1000\text{nm}$

Answer 1

The correct option is C The osmotic pressure of a colloidal solution is of higher order than the true solution at the same concentration

Statement (c) is incorrect about colloids. Colligative properties such as relative lowering of vapour pressure, elevation in boiling point, depression in freezing point and osmotic pressure of a colloidal solution is of low order than the true solution at the same concentration.