When a sulphur sol is evaporated, sulphur is obtained. On mixing with water, sulphur sol is not formed. The sol is:

Reversible

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Hydrophobic

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Hydrophilic

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Lyophilic

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Solution

The correct option is C Hydrophobic
When a sulphur sol is evaporated, sulphur is obtained. On mixing with water, sulphur sol is not formed.

The sol is hydrophobic. Hydrophobic sols are irreversible in nature.

There is a little affinity between the disperse phase and the dispersion medium.

Hence, option B is correct.

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