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Model Paper 2 — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceModel Paper 21 Mark
MCQ
The particles of the colloidal solution are
  • ✓
    visible with a powerful microscope
  • B
    not visible with a powerful microscope
  • C
    visible with the naked eye
  • D
    visible with a simple microscope
✓

Answer

Correct option: A.
visible with a powerful microscope
The size of particles of the colloidal solution lies between $10^{-7} \ cm$ to $10^{-4} \ cm$ in diameter. So, The particles of colloidal solutions are visible with a powerful microscope.

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