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Elevation in boiling point of an aqueous...

Elevation in boiling point of an aqueous solution of urea is `0.52 ( k_(b) "for water"=0.52K"molality"^(-1))`. The mole fraction of urea in this solution is :

A

0.982

B

0.0567

C

0.943

D

0.018

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The correct Answer is:
D
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