The colloidal solution of red colour is obtained by adding some drops of dil HCl in precipitate of fresh ferric oxide. This process is called :
(a) Precipitation
(b) Dialysis
(c) Protection
(d) Dissociation
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Answer:
(a) Precipitation
Explanation:
Peptisation is the process in which a fresh precipitate is converted into a colloidal solution by adding a peptizing agent or electrolyte.
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Answer:
The process is called (a) Precipitation
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