Surface tension of lyophilic sol is (a) lower than that of dispersion medium. \( \mathrm{P} \) (...

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Surface tension of lyophilic sol is
(a) lower than that of dispersion medium.
\( \mathrm{P} \)
(b) more than that of dispersion medium.
W
(c) equal than that of dispersion medium.
(d) any of these, depending on the dispersion medium.
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