6. Dissolved substance in colloidal solution is called: A. Dispersion medium B. Solute C. Solvent D. Dispersed particles 7. Which of the following remains constant after dilution? A. Number of moles of solvent B. Number of moles of solute C. Solvent to solute ratio D. Distance between solute particles 8. Which of the following is not a colligative property? A. Depression of freezing point B. Elevation of boiling point C. Vapor pressure D. Osmotic pressure 9. What is the unit of Ko for a solvent? A. C. mol/Kg B. C. Kg/mol C. mol/Kg.C D. Kg/mol.C 10. Which is a correct statement? A. Sea water has a greater freezing point than Nile water B. Sea water has a lower boiling point than Nile water a C. Nile water has a greater osmotic pressure than sea water D. Sea water has a greater osmotic pressure than Nile water 11. Which concentration unit is the most affected by temperatur change? A. Molarity B. Molality C. m/m percentage D. mole to mole ratio 12. Choose the correct statement about osmosis: A. Solvent passes from high concentration side to low concentration side B. Osmotic pressure is the pressure that helps solvent to flow C. Osmotic pressure is the pressure that prevents solvent to flow D. Its rate increases as concentration difference decreases 13. Which is the most stable solution if temperature is lowered: A. Unsaturated B. Saturated C. Supersaturated D. Highly concentrated 14. Molarity is related to: A. Mass of solvent B. Mass of solution C. Volume of solvent D. Volume of solution 15. Molality can be converted to molarity if ...... is known. A. Density of solvent B. Density of solution C. Mass of solvent D. Mass of solution 16. Solvent has a greater. than solution. A. boiling point and freezing point B. boiling point and vapor pressure C. vapor pressure and freezing point D. osmotic pressure and freezing point 17. Colligative properties are: A. changes that take place to solute B. dependent on type of solute C. dependent on number of moles of solute D. Independent of type of solvent