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Which of the following sol will be destabilised with ionic impurities- if present?

(a) Gum sol in water
(b) starch sol in water
(c) Egg albumin sol in water
(d) $Fe(OH)_3$ sol in water
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Lyophobic colloids are electrically charged, relatively unstable and tend to change into a suspension.
Answer: $Fe(OH)_3$ sol in water
Only a lyophobic sol like $Fe(OH)_3$ will be destabilised by ionic impurities. All others are lyophobic sols.
answered Jan 26, 2014 by mosymeow_1
edited Jan 29, 2014 by mosymeow_1

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