Sec 3 Quick Recall - Methods of separation

Which solid is insoluble in water?

• sugar

• sodium chloride

  (table salt)

• sand

In filtration, the liquid which passes through the filter paper is called .............

• filter paper

• filtrate

• filter

• filtration

Sodium chloride (table salt) dissolves in water.

What method would you use to separate this mixture so that you can get the water from the salt solution?

• filtration

• simple distillation

• chromatography

• evaporation and crystallisation

Answer explanation

Read the question carefully, you are obtaining the liquid component from a solution, that is why the answer is simple distillation.

In the distillation apparatus shown, what are the parts labelled A and B?

• A = funnel, B = thermometer

• A = thermometer, B = funnel

• A = condenser, B = flask

• A = condenser, B = thermometer

The diagram shows the apparatus for separating soil and water. What are the labelled parts?

• A = distillate, B = filtrate
• A = filtrate, B = residue
• A = residue, B = filtrate
• A = residue, B = distillate

What is the name for the separation technique shown in the picture?

• distillation

• dissolving

• evaporation

• filtration

Name the method that is used to separate an insoluble solid from a solution.

• Filtration

• Distillation

• Crystallisation

• Evaporation

What are the correct sequence to separate a dissolved solid from its solution?

• Filtration and then wash solid with distilled water

• Evaporation to remove most of the solvent, and then crystallisation

• Filtration and then sublimation

What is the most suitable technique to separate liquid ethanol from a miscible mixture of ethanol and propanol?

• chromatography

• crystallisation

• fractional distillation

• simple distillation

What is the most suitable technique to separate iron fillings from a mixture of iron fillings and water?

• evaporation

• filtration

• diffusion

• dissolving