Which of the following can not be used as a protective colloid?
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Answer:
the correct answer is gelatin
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Answer:
The correct answer is gold sol.
Explanation:
Protective colloids are lyophilic, which are more stable than lyophobic. So, protective colloids protect lyophobic colloids from getting precipitating as lyophilic colloids create a layer around lyophobic colloids.
Since, gelatin, starch and gum are lyophilic in nature and gold sol is lyophobic.
Therefore, gold sol can not be used as a protective colloid.
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