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  4. On adding few drops of dil. HCl to freshly precipitated ferric hydroxide, a red coloured colloidal solution is obtained. This phenomenon is known as

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Q. On adding few drops of dil. HCl to freshly precipitated ferric hydroxide, a red coloured colloidal solution is obtained. This phenomenon is known as

Surface Chemistry

Solution:

Formation of a colloidal solution by adding few drops of an electrolyte to freshly prepared precipitate is known as peptisation.