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Surface Chemistry — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistrySurface Chemistry1 Mark
MCQ
Which phenomenon occurs when an electric field is applied to a colloidal solution and electrophoresis is prevented?
Reverse osmosis takes place.
Electroosmosis takes place.
Dispersion medium begins to move.
Dispersion medium becomes stationary.
  • A
    $c$ and $d$
  • B
    $a$ and $b$
  • C
    $a$ and $d$
  • ✓
    $b$ and $c$
✓

Answer

Correct option: D.
$b$ and $c$
When electrophoresis, i.e., movement of particles is prevented by some suitable means, it is observed that the dispersion medium begins to move in an electric field. This phenomenon is termed electro osmosis.

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