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a
The movement of dispersion medium in an electric field when the dispersed particles are prevented from moving is called Electrophoresis
b
The potential difference between the fixed charged layer and the diffused layer having opposite charge is called Zeta potential
c
Tyndall effect in colloidal solution is due to absorption of light
d
Brownian motion and Tyndall effect are shown by true solutions
answer is B.
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Detailed Solution
The colloidal sol particles and dispersion medium have opposite chargeThe first layer of ions is firmly held and is termed on fixed layer and second layer is calledDiffused layer. The potential difference between fixed layer and diffused layer of opposite chargesis called the electrokinetic potential (or) zeta potential