Separation techniques

What is the name of this separation technique?

• Simple distillation

• Fractional distillation

• Boiling

• Evaporation

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following statements tells us that a sample of liquid is pure water?

• It is colourless.

• It leaves no residue when filtered.

• It boils at 100^oC.

• It is odourless.

Which separation technique is used to obtain pure water from seawater?

• Simple distillation

• Filtration

• Chromatography

• Evaporation

What is the name of this separation technique?

• distillation

• filtration

• evaporation

• chromatography

What is the physical property on which fractional distillation depends?

• different boiling points

• different melting points

• different solubilities

• different densities

For paper chromatography to work,

• the dyes must have different boiling points.

• the dyes must have different solubilities in the solvent.

• the starting line on the chromatogram must be drawn using pen.

• The starting line must be below the level of the solvent.

Which separation technique is used to obtain pure oxygen from liquid air?

• Simple distillation

• Filtration

• Chromatography

• Fractional distillation

Which separation technique is used to obtain salt from seawater?

• Simple distillation

• Filtration

• Chromatography

• Evaporation

Which ink is most soluble?

• Blue

• Red

• Yellow

• Green

Tags

NGSS.MS-PS1-2

Which ink is a mixture?

• Blue

• Red

• Yellow

• Black