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6th Class Science Sorting Materials into Groups Question Bank Sorting and Separation of Materials

  • question_answer
    Depending upon the nature of the constituents present in a mixture, Suhana, a class 6 student suggested some methods of separation as shown in the table.    
    Types of mixture Methods of separation
    1. Solid - Solid     Handpicking, Sieving
    2. Solid - Liquid   (insoluble) Sedimentation Decantation, Filtration
    3. Liquid - Liquid _(immiscible)  Decantation, Separating funnel
    4. Solid - Liquid (soluble) Filtration, Decantation
    5. Liquid - Liquid  (miscible) Distillation
    Which of these is/are incorrect method(s) of separation?

    A)  1 and 2 only               

    B)  3 only 

    C)         1 and 5 only   

    D)         4 only

    Correct Answer: D

    Solution :

    Soluble solid - liquid mixture cannot be separated by filtration and decantation. It can be separated by evaporation.


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