Science Form 2 Chapter 5 Water and Solution

Which of the following is true about freezing point of pure water and salt solution?

• Pure Water is below 0 ^oC , Salt solution is 0 ^oC

• Pure Water is above 0 ^oC , Salt solution is 0 ^oC

• Pure Water is 0 ^oC , Salt solution is below 0 ^oC

• Pure Water is 0 ^oC , Salt solution is above 0 ^oC

Which of the following methods of water purification can eliminate odour?

• Boiling

• Distillation

• Chlorination

• Sedimentation

Which of the followings will occur when salt is added to distilled water?

• Increase in density

• Lower the boiling point

• Lower the freezing point

• Decrease in density

Alina wants to dissolve jelly strips in the water. Which of the following action helps to dissolve the jelly strips faster?

• Use less quantity of water

• Add sugar into water

• Tie some jelly strips together

• Cut the jelly strips shorter

The following list is the characteristics of a liquid:

• Does not allow light to penetrate
• Leaves a residue when filtrated
• Cloudy

• Suspension

• Dilute solution

• Concentrated solution

• Saturated solution

Choose elements found in water molecules

• Oxygen

• Carbon

• Nitrogen

• Hydrogen

Kills microorganism found in water.

• Chlorination

• Filtration

• Distillation

• Oxidation

Eliminates suspended particles in water

• Chlorination

• Filtration

• Distillation

• Oxidation

What is (i)?

• Adhesive force

• Cohesive force

• Attractive force

What is (ii)?

• Adhesive force

• Cohesive force

• Attraction force