CBSE  /  Class 6  /  Science  /  Separation of Substances

  • 1. 
    Butter is separated from milk by

  • sedimentation
  • filtration
  • churning
  • decantation

  • 2. 
    Filtration is a method to separate the components of a

  • solution
  • mixture of a liquid and an insoluble substance
  • both (a) and (b)
  • pure substance

  • 3. 
    Threshing is done by

  • beating
  • bullocks
  • machines
  • all of these

  • 4. 
    Which method is used to separate pebbles and stones from sand?

  • Handpicking
  • Winnowing
  • Sieving
  • Any of these

  • 5. 
    The components of a solution (say sugar in water) can be separated by

  • filtration
  • evaporation
  • sedimentation
  • decantation

  • 6. 
    Sand from water is separated by

  • sieving
  • evaporation
  • filtration
  • sedimentation and decantation

  • 7. 
    The process of conversion of water vapours into liquid is called

  • condensation
  • decantation
  • sedimentation
  • evaporation

  • 8. 
    The process of conversion of water into its vapours is called

  • evaporation
  • condensation
  • guttation
  • transpiration

  • 9. 
    A mixture of ammonium chloride and sand is separated by

  • evaporation
  • decantation
  • sublimation
  • filtration

  • 10. 
    The property which forms the basis of sieving

  • difference in weight
  • difference in colour
  • difference in shape
  • difference in size
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