separation techniques

Separation Techniques

Some text here about the topic of discussion

how to make crystal in lab?

Multiple Choice

The Picture 1 shows the filtration set. Part that indicated by number 1 is …

• filtrate

• solution

• residue

​ 1. solvent : substance that dissolves a solute

2. solute : substance that is dissolved in solvent

3. ​solution : mixture of solute and solvent

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aqueous solution is called if the solvent used is water​

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​solutions and solubility

Multiple Choice

Which method is most suitable to obtain calcium carbonate from a suspension of calcium carbonate in water?

• crystallization

• distillation

• evaporation

• filtration

Multiple Choice

Which mixture can be separated by adding water, stirring and filtering?

• charcoal and sodium chloride

• copper and iron

• pencil lead and sand

• sugar and sodium chloride

Multiple Choice

A pupil mixed each of the following solids into water and stirred until nothing else happened.

Choose the mixture below that cannot be separated using filtration.

• sugar and water

• flour and water

• chalk and water

• sand and water

Multiple Choice

What apparatus can be used to separate samples of insoluble salt from a mixture …

• sugar and water

  Bunsen burner, tripod, wire gauze, evaporating dish

• Test tube, delivery tube, glass rod

• Beaker glass, funnel, filter paper, glass rod

• sand a

  Beaker glass, separating funnel, glass rodnd water

Multiple Choice

The flow diagram shows how a pupil extracted pure, dry salt from rock salt.

crushing $$\rightarrow$$  dissolving $$\rightarrow$$  filtration $$\rightarrow$$  

• simple distillation

• evaporation

• fractional distillation

Multiple Choice

The table shows the colours and the solubility in water of four solids.

Which of two solids are present in the mixture?

• W and X

• W and Y

• X and Y

• X and Z

Multiple Choice

It is suspected that a lollipop contains traces of a poisonous green dye (boiling point 73°C) as well as two harmless orange and red dyes (boiling points 69°C and 73°C respectively).

What is the best method by which the green dye may be detected?

• simple distillation

• filtration

• fractional distillation

• evaporation

Multiple Choice

The table shows the colours and the solubility in water of four solids.

Which of two solids are present in the mixture?

• W and X

• W and Y

• X and Y

• X and Z

Multiple Choice

A mixture of two immiscible liquids W and X (like oil and water), can be separated by using …

• simple distillation

• separating funnel

• evaporation

• filtration

Multiple Choice

Brown sand consist of solid insoluble minerals and some metals like iron, and cobalt. Which apparatus can be used to separating metals with other minerals?

• fractional distillation

• filtration

• magnet

Multiple Choice

Naphthalene has similar characteristic with iodine, so that it can be purified by…

• sublimation

• bar magnet

• filtration