During electro-osmosis of \( \mathrm{Fe}(\mathrm{OH})_{3} \) sol: (a) sol particles move towards...

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During electro-osmosis of \( \mathrm{Fe}(\mathrm{OH})_{3} \) sol:
(a) sol particles move towards anode
(b) sol particles move towards cathode
(c) the dispersion medium moves towards anode
(d) the dispersion medium moves towards cathode
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