Quiz for Solutions

Q1: What is a solution?

A. Homogeneous mixture B. Heterogeneous mixture C. Colloidal mixture D. Suspension

Q2: Which of the following is an example of a solid solution?

A. Alloy B. Salt in water C. Alcohol in water D. Oil in water

Q3: The concentration of a solution is expressed as:

A. Molarity, Molality, Normality B. Density C. Viscosity D. Boiling point

Q4: What is molarity?

A. Moles of solute per liter of solution B. Moles of solute per kg of solvent C. Grams of solute per liter D. Moles of solvent per liter

Q5: The unit of molality is:

A. mol/kg B. mol/L C. g/L D. kg/mol

Q6: Raoult’s law applies to:

A. Ideal solutions B. Non-ideal solutions C. Colloidal solutions D. Saturated solutions

Q7: Which colligative property depends on the number of solute particles?

A. Boiling point elevation B. Color C. Odor D. Density

Q8: The lowering of vapor pressure of a solvent on adding a solute is explained by:

A. Raoult’s law B. Henry’s law C. Dalton’s law D. Graham’s law

Q9: What is the boiling point elevation?

A. Increase in boiling point due to solute B. Decrease in boiling point C. Constant boiling point D. No change

Q10: The freezing point of a solution is:

A. Lower than pure solvent B. Higher than pure solvent C. Same as pure solvent D. Varies randomly

Q11: Which of the following shows positive deviation from Raoult’s law?

A. Ethanol + Water B. Benzene + Toluene C. Carbon tetrachloride + Benzene D. None

Q12: What is Henry’s law related to?

A. Solubility of gases in liquids B. Boiling point elevation C. Freezing point depression D. Vapor pressure lowering

Q13: Which factor affects solubility of gases in liquids?

A. Temperature B. Color C. Pressure only D. Viscosity

Q14: Molality is preferred over molarity because:

A. It does not change with temperature B. It depends on temperature C. It changes with pressure D. It depends on solvent volume

Q15: The process of a solute dissolving in a solvent is called:

A. Solvation B. Sublimation C. Distillation D. Condensation

Q16: Which is a colligative property?

A. Osmotic pressure B. Density C. Viscosity D. Color

Q17: Osmotic pressure is defined as:

A. Pressure to stop osmosis B. Pressure to start boiling C. Pressure to start freezing D. Atmospheric pressure

Q18: Which method is used to measure molecular weight by colligative properties?

A. Osmometry B. Chromatography C. Spectroscopy D. Titration

Q19: In which solution will freezing point depression be maximum?

A. 1 molal NaCl B. 1 molal glucose C. 1 molal urea D. 1 molal ethanol

Q20: What is the molar mass of a solute if 2 g lowers freezing point of 100 g solvent by 0.5°C? (Kf=1.86°C kg/mol)

A. 74.4 g/mol B. 37.2 g/mol C. 148.8 g/mol D. 18.6 g/mol