The migration of dispersion medium under the influence of an electric potential is called
- ACataphoresis
- BElectroosmosis
- CElectrophoresis
- DSedimentation
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Assertion : The micelle formed by sodium stearate in water has $-COO^{-}$ groups at the surface.
Reason : Surface tension of water is reduced by the addition of stearate.
Reason : Surface tension of water is reduced by the addition of stearate.
MediumAIIMS 2003
View SolutionMatch List $I$ with List $II$:
List $I$ List $II$ $(A)$. Brownian Motion $(I)$. Removal of impurities from the colloidal sols using a semipermeable membrane. $(B)$. Tyndall Effect $(II)$. Movement of colloidal particles under the influence of an electric field. $(C)$. Electrophoresis $(III)$. Random movement of colloidal particles due to kinetic energy. $(D)$. Dialysis $(IV)$. Scattering of light by colloidal particles
| List $I$ | List $II$ |
| $(A)$. Brownian Motion | $(I)$. Removal of impurities from the colloidal sols using a semipermeable membrane. |
| $(B)$. Tyndall Effect | $(II)$. Movement of colloidal particles under the influence of an electric field. |
| $(C)$. Electrophoresis | $(III)$. Random movement of colloidal particles due to kinetic energy. |
| $(D)$. Dialysis | $(IV)$. Scattering of light by colloidal particles |
When a gel is left standing,it loses a small amount of liquid or water. This phenomenon is called .....
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View SolutionWhy does leather get hardened after tanning?
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