On adding few drops of dil. HCl to freshly precipitated ferric hydroxide, a red coloured colloidal solution is obtained. The phenomenon is known as :
A
protective action
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B
flocculation
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C
coagulation
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D
peptisation
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Solution
The correct option is D peptisation Peptization is the process of forming stable colloids by using an electrolyte to break up a precipitate and disperse it into the colloid