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Depression of freezing point of which of...

Depression of freezing point of which of the following solutions does represent the cryoscopic constant of water ?

A

`6%` by mass of urea is aqueous solution

B

`100g` of aqueous solution containing `18g` of glucose

C

`1M KCl` solution in water

D

`59g` of aqueous solution containing `9g` of glucose

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The correct Answer is:
4
Cryosopic constant `K_(r)+Delta T_(f)` of solution having until molality of normal solutes
Molality of glucose solution in `(3)=(9xx1000)/((59-9)xx180)=1`
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