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Which set of colloidal solutions can be obtained by electrical dispersion / Bredig's are method ?

$(a)\;platinum\;,paints\qquad(b)\;paints\;,varnishes\;,gold\qquad(c)\;platinum\;,silver\;,gold\qquad(d)\;silver\;chloride\;,gold$

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Answer : platinum , silver , gold
Explanation :
Paints & Varnishes can be obtained by mechanical dispersion . Platinum , silver & gold are obtained by Bredig's are method of dispersion . A colloid sol of silver chloride is obtained by peptization .
answered Mar 19, 2014 by yamini.v
 

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