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Is Matter Around Us Pure — Science STD 9 — Question

CBSE BoardEnglish MediumSTD 9ScienceIs Matter Around Us Pure1 Mark
MCQ
Which of the following statement is not true about colloidal solution:
  • A
    These are visible under powerful microscope
  • B
    Their particles do not settle down with passage of time
  • C
    Their particles are electrically charged
  • D
    These are homogeneous in nature
✓

Answer

  1. These are homogeneous in nature

Explanation:

In colloidal solution, a material is evenly suspended in a liquid, e.g., milk or oil in water is a colloidal solution which is present in two phases in heterogenous phase, e.g., foams, emulsions, sols.

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