Statement I : A colloidal sol of Fe(OH)₃ formed by peptisation carries positive charge.

Statement II : During formation of Fe(OH)₃ sol, electrons are lost by the particles.

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Statement I is correct and II is incorrect

Statement I and II are correct

Both statements - I and II are incorrect

Statement - I is incorrect and Statement - II is correct

answer is B.

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Detailed Solution

Peptization takes place forming a positively charged colloidal sol of Fe(OH)₃. Peptization is a process of passing of a precipitate into colloidal particles by adding suitable electrolyte.
A reddish brown colored colloidal solution is obtained by adding the small quantity of ferric chloride solution to the freshly precipitated ferric hydroxide.
Fe(OH)₃ have a tendency to adsorb preferentially the Fe⁺³ ions present in the solution as Fe⁺³ ions are common to the lattice of Fe(OH)₃ particle which impart positive charge to the colloidal particles present in the solution.

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