Q.

The osmotic pressure of a non-aqueous solution is measured by

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a

 Morse and Frazer method

b

Townend's method

c

Berkeley and Hartley method

d

Pfeffer's method

answer is D.

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Detailed Solution

First three methods involve use of Cu2Fe(CN)6 as semi-permeable membrane which will be dissolved in non-aqueous solvent and thus only Townend's method having semipermeable membrane of powdered glass and clay can be used to determine the osmotic pressure of non-aqueous solutions.

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