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- 1. Multiple ChoiceSand and gravel may be separated from each other through using..a filter funnela sievean evaporating basina distillation
- 2. Multiple Choice
Which of the following pairs of substances may best be separated through distillationsand and soilwater and soilsalt and sandwater and alcohol - 3. Multiple ChoiceWhich one of the following techniques would best be used to separate soil and water?DecantingdistillationFiltrationChromatography
- 4. Multiple ChoiceWhich one of the following solids is insoluble in water?sugarsandcopper sulfatesalt
- 5. Multiple ChoiceName the separation technique shown in the diagram.evaporationdistillationfiltrationdecanting
- 6. Multiple ChoiceSodium chloride can be separated from rock salt by first adding water to the mixture to dissolve the sodium chloride. The separation then takes place in two stages:evaporation followed by filtrationdistillation followed by decantingfiltration followed by evaporationfiltration followed by decanting
- 7. Multiple ChoiceTwo or more substances mingled together, but not chemically combined are known as aresiduesolutiondistillatemixture
- 8. Multiple ChoiceThe separation technique that involves heating a solution until the liquid changes into a gaseous state, leaving behind a solid is known asdecantingevaporationloadingchromatography
- 9. Multiple ChoiceThe diagram shows the apparatus for separating soil and water. What are the labelled parts?A = residue, B = distillateA = residue, B = filtrateA = filtrate, B = residueA = distillate, B = filtrate
- 10. Multiple ChoiceIn the process of evaporation, which one of the following pieces of laboratory apparatus would NOT be used?filter funnelbunsen burnerevaporating basinwire gauze
- 11. Multiple ChoiceWhich one of the following methods is used to separate the colours in food dyes?winnowingThreshingCrystallizationchromatography
- 12. Multiple ChoiceThe separation technique shown in the diagram isfractional distillationcentrifugationfiltrationchromatography
- 13. Multiple ChoiceIn a coffee machine, the ground coffee is separated from the coffee solution by using..sand paperfilter papertoilet papertissue paper
- 14. Multiple ChoiceDyes in water soluble markers may be separated by means of..crystallizationsublimationchromatographysedimentation
- 15. Multiple ChoiceWhich one of the following would you use to separate sand from iron filings?a bar magnetfilter paperchromatography paperalum
- 16. Multiple ChoiceWater and alcohol are easily separated by distillation because of theirdifferent melting pointsdifferent coloursdifferent densitiesdifferent boiling points
- 17. Multiple ChoiceThe diagram shows the chromatogram for three colouring dyes and that for a brown marker. What dye(s) are contained in the marker's ink?purple and greenpurple and yellowpurple onlygreen and yellow
- 18. Multiple ChoiceWhich one of the following is NOT a mixture?SugarPaintCrude oilAir
- 19. Multiple ChoiceLiquids that do not mix may be separated by using..an evaporating disha separating funnela loadinga sedimentation
- 20. Multiple ChoiceSalt and water arecompoundmixtureelementsolute
- 21. Multiple ChoiceA process in which a liquid changes in to vapor or gas by boiling throughout is calledFractional distillationfiltrationdistillationevaporation
- 22. Multiple ChoiceA separation technique which uses a fractionating column to separate different liquid components in a mixture with different boiling points by heating mixture is calledFractional distillationfiltrationcrystallizationevaporation
- 23. Multiple ChoiceWhen different gases are mixed together to form air there ischemical reactiondecompositionno physical reactionno chemical reaction
- 24. Multiple ChoiceSolid particles which are left on filter paper while filtration is calledfiltrateresiduesolventsolute
- 25. Multiple ChoiceBoiling point is a point at which liquid turns in to..solidliquidmoltengas
- 26. Multiple ChoiceIron fillings can be separated from iron and Sulphur mixture bysedementationheatingmagnetic attractionseiving
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