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- 1. Multiple Choice
The process of settling down of particles of a solid in a liquid is
Sublimation
Sedimentation
Filtration
Decantation
- 2. Multiple Choice
The solubility ____________ with increase in temperature.
doesn't change
decreases
increases
- 3. Multiple Choice
While preparing chapatis, Paheli found that the flour to be used was mixed with wheat grains. Which out of the following is the most suitable method to separate the grains from the flour?
Threshing
Sieving
Winnowing
Filtration
- 4. Multiple Choice
What is the process that is used to separate grains from stalks called?
handpicking
threshing
sieving
winnowing
- 5. Multiple Choice
When is the solution saturated?
No more salt can be dissolved in the amount of water we have taken
Lot more salt can be added
You have to add some sugar into the solution
None of the above
- 6. Multiple Choice
The diagram shows the apparatus for separating soil and water. What are the labelled parts?A = distillate, B = filtrateA = filtrate, B = residueA = residue, B = filtrateA = residue, B = distillate - 7. Multiple Choice
Which separation technique uses the apparatus shown in the diagram?
filtration
evaporation
distillation
chromatography
- 8. Multiple ChoiceWhat is the boiling point of water?0oC100oC80oC95oC
- 9. Multiple ChoiceFiltration can be used to separate...an insoluble solid from a solutiona soluble solid from a solutiona dissolved solid from a solution
- 10. Multiple Choice
What separation technique does the picture show?
Sieving
filtering
magnetic separation
Distillation
- 11. Multiple Choice
Sawdust is not soluble in water. If, accidentally some particles of sawdust drop into a glass of water. How would you separate them from water?
Decanting
Filtering
Sieving
Distillation
- 12. Multiple Choice
You had these materials together but after performing a separation technique, you have these five groups. Which separation technique did you use?
Distillation
Decanting
Paper chromatography
Sieving
- 13. Multiple ChoiceWhich technique is shown the diagram belowseivingfiltrationdecantingcrystallization
- 14. Multiple ChoiceWhich one of the following is the name for separation technique in the picture belowdistillationdissolvingevaporationdecanting
- 15. Multiple ChoiceAn example of a mixture isWater and oilCereal and MilkSand and waterAll of the above
- 16. Multiple ChoiceThe drops of water that appear on the outside of a glass of cold water on a warm day are an example of?sublimationcondensationevaporation
- 17. Multiple ChoiceIron and copper screws could be separated using a magnet becauseiron is magnetic, copper is notcopper is magnetic, iron is notneither metal is magneticcopper screws are heavier than iron and fall off the magnet
- 18. Multiple ChoiceWhat is a mixture?A chemical combination of two or more different substances.A physical combination of two or more different substances.A chemically pure substance.A special type of solution
- 19. Multiple Choice
What is the purpose of Filtration?
Separating and insoluble solid from a liquid
Separation of a mixture of 2 solids
Separates heavier substances from a suspension
- 20. Multiple Choice
Which of the following is essential to perform winnowing activity?
Wind
Water
Magnet
Filter paper
- Answer choicesTagsAnswer choicesTags