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Depression of freezing point of which of the following solutions does represent the cryoscopic constant of water?
A. `6%` by mass of urea in aqueous solution
B. `100g` of aqueous solution containing `18g` of glucose
C. `59g` of aqueous solution containing `9g` of glucose
D. `1M KCl` solution in water.

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Correct Answer - 3
Cryoscopic constant `K_(f)=DeltaT_(f)` of solution having until molality of normal solutes
Molality of glucose solution in `(3)=(9xx1000)/((59-9)xx180)=1`

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