Let's assess your learning (Separation techniques)

This is the setup for which technique?

• Fractional distillation

• Paper chromatography

• Filtration

• Simple distillation

You have a sugar solution. Which technique should you use to separate the mixture to get sugar crystals and pure water ?

• Evaporation

• Simple distillation

• Crystallisation

• Fractional distillation

What is the purpose of the condenser in this setup?

• To collect the vapours and make it into liquid

• To cool the vapours and make it into liquid

• To melt the vapours and make it into liquid

• To freeze the vapours and make it into liquid

You have a mixture of different liquids. Which technique should she use to separate them? (multiple correct answers)

• Paper chromatography

• Crystallisation

• Simple distillation

• Fractional distillation

Liam is conducting an experiment in the lab where he has a mixture of liquids that have boiling points close to one another (the difference in their boiling points is 30 degrees). Which technique should he use to separate them?

• Paper chromatography

• Crystallisation

• Simple distillation

• Fractional distillation

The highlighted apparatus in this setup is called?

• Thermometer

• Flask

• Fractionating column

• Condenser

For paper chromatography experiment, label A and B are?

• A is pencil line

  B is baseline

• A is mixture

  B is pencil line

• A is baseline

  B is pencil line

• A is solvent front

  B is pencil line

What does R_f stand for?

• Regulation factor

• Retardation factor

• Revolution factor

• Running factor

Which dye is the most soluble in this paper chromatography experiment?

• Purple and blue

• Red

• Blue

• Solvent front

The R_f value is calculated as