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Question
Out of starch and ferric hydroxide sol, which one can easily be coagulated and why?
Solution
Out of starch and ferric hydroxide sol, which one can easily be coagulated and why? Ans: Ferric hydroxide can be easily coagulated by heating, evaporating medium etc than starch. Ferric hydroxide is a Lyophobic colloid, hence interaction between dispersed phase in dispersion medium a weak. While starch a Lyphilic collide (Liquid loving) so it is stable and does not easily coagulate
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