When a small amount of FeCl3 is added to a freshly precipitated Fe(OH)3, b reddish brown colloidal solution is obtained. This pheno¬menon is known as (a) dialysis (b) peptization (c) protection (d) dissolution

When a small amount of FeCl3 is added to a freshly precipitated Fe(OH)

1.	When a small amount of FeCl3 is added to a freshly precipitated Fe(OH)3, b reddish brown colloidal solution is obtained. This pheno¬menon is known as (a) dialysis (b) peptization (c) protection (d) dissolution
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