Which of the following is a hydrophilic colloidal sol:

Barium sulphate sol

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Arsenious sulphide sol

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Starch sol

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Silver iodide sol

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Solution

The correct option is C Starch sol
Hydrophilic colloidal sol is defined as a colloid system in which the colloid particles are hydrophilic polymers dispersed in water.
Starch sol is hydrophilic in nature due to presence of glucose molecules joined together by glycosidic linkages, which dissolves in water when heated.
So starch sol hydrophilic in nature and rest are hydrophobic in nature.

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Which of the following is a hydrophilic sol?

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