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9th Class Science Is Matter Around Us Pure Question Bank 9th CBSE Science Is Matter Around Us Pure

  • question_answer
      Explain why filter paper cannot be used to separate colloids.

    Answer:

                      The size of colloidal particles is less than 100 nm while the size of pores present in an ordinary filter paper is larger than 100 nm. Hence, a colloidal solution cannot be separated by filtration.                                   (2)


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