Quiz Chapter 5: Water and Solution

1. Which statement accurately describes a suspension?

1. Particles are uniformly dissolved and light passes through clearly
2. Insoluble particles remain suspended, making the liquid cloudy, and filter paper can separate them
3. It cannot be separated by filtration
4. It boils at a constant fixed temperature without residue

2. Which property allows water to travel upwards against gravity through narrow xylems in tall plants?

1. High density at 4°C
2. Capillary action (Cohesion and Adhesion)
3. Electrolytic dissociation
4. Low boiling point

3. Why does fine sugar dissolve faster in warm water than coarse sugar crystals in cold water?

1. Fine sugar has a smaller total surface area and higher temperature slows down dissolution
2. Higher temperature increases kinetic energy and smaller particle size increases total surface area
3. Coarse sugar crystals react chemically with cold water to slow dissolution
4. Warm water reduces the solubility limit of sugar

4. Which condition describes a saturated solution at room temperature?

1. It contains very little solute and can dissolve much more solute
2. It contains the maximum amount of dissolved solute; any additional solute will not dissolve
3. It contains no dissolved solute particles
4. It consists only of liquid organic solvents

5. What is the volume ratio of Hydrogen to Oxygen gas produced during the electrolysis of pure water?

1. 1 : 1
2. 1 : 2
3. 2 : 1
4. 3 : 1

6. Adding table salt (sodium chloride) to pure water will have what effect on its physical properties?

1. Lowers the boiling point and raises the freezing point
2. Raises the boiling point and lowers the freezing point
3. Raises both the boiling and freezing points
4. Has no effect on boiling or freezing points

7. Which water treatment process kills bacteria but fails to remove suspended mud particles or dissolved salts?

1. Distillation
2. Boiling
3. Filtration
4. Sedimentation

8. How does a larger exposed surface area affect wet clothes drying on a clothesline?

1. Decreases evaporation because more area absorbs moisture
2. Increases evaporation rate by allowing more surface water molecules to escape
3. Has no effect on evaporation rate
4. Prevents wind from reaching the fabric

9. Why is water commonly referred to as a 'universal solvent'?

1. It can dissolve every existing substance on Earth
2. It can dissolve a wider variety of substances than any other liquid solvent
3. It is the only liquid that forms neutral solutions
4. It boils at exactly 100°C under all circumstances

10. Which factor decreases the rate of evaporation of water exposed in an open environment?

1. Higher surrounding temperature
2. Higher atmospheric humidity
3. Faster wind speed
4. Larger exposed surface area