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90 g non - volatile, non - dissociative ...

90 g non - volatile, non - dissociative solution is added to 1746 g water to form a dilute, ideal solution. The vapour pressure of water has decreased from 300 mm of Hg to 291 mm of Hg. The molecular weight of solute is.

A

90

B

60

C

30

D

15

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The correct Answer is:
C
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