JEE Main Chemistry question

Not in JEE Main or NEET syllabus

Which is not a property of hydrophilic sols?

(A)High concentrations of the dispersed phase can be easily attained
(B)Coagulation is reversible
(C)Viscosity and surface tension are about the same as that of the dispersion mediumCorrect
(D)The charge on the particle depends on the pH of the dispersion medium; it may be positive or negative

Answer: (C)

Solution

Because hydrophilic sol particles are extensively solvated and strongly attract medium molecules around them, such sols actually show markedly higher viscosity and markedly lower surface

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Question ID VK-145087