Q.
A colloidal sol of Fe(OH)3 in water is
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a
A hydrophilic colloid
b
A hydrophobic colloid
c
An emulsion
d
None of these
answer is B.
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Detailed Solution
Fe(OH)3 sol can be prepared by hydrolysis of FeCl3.Affinity between Fe(OH)3 & water is less so special techniques are requiredto prepare It is hydrophobic
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