Which one of the following is an example of a hydrophilic colloidal sol?
A
Sulphur
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B
As2S3
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C
Gold sol
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D
Starch
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Solution
The correct option is C Starch Starch is an example of a hydrophilic colloidal sol. It has strong affinity between disperse phase and dispersion medium. It is a reversible and stable sol.