Which of the following statements are correct? (i) Mixing two oppos...

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Which of the following statements are correct?
(i) Mixing two oppositely charged sols neutralises their charges and stabilises
\( \mathrm{P} \) the colloid.
(ii) Presence of equal and similar charges on colloidal particles provides
W stability to the colloids.
(iii) Any amount of dispersed liquid can be added to emulsion without destabilising it.
(iv) Brownian movement stabilises sols.
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