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29. A solution containing 10g per

dm3 of urea (molecular mass = 60 gmol-1 ) is isotonic with a 5% solution of a non volatile solute. The molecular mass of this non volatile solute is

a.  300 g mol -1

b. 350 g mol -1 

c. 200 g mol -1

d. 250 g mol -1

Ans. a

 

(12)

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