JEE Main Chemistry question
Not in JEE Main or NEET syllabus
When a sulphur sol is evaporated, sulphur is obtained. On mixing this sulphur with water, a sulphur sol is not re-formed. The sol is
Answer: (C)
Solution
A lyophilic (hydrophilic/reversible) sol can be reconstituted simply by mixing its dried residue with the dispersion medium, whereas a lyophobic (hydrophobic) sol is irreversible — once coagulated or dried, it cannot be brought
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