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The addition of 3 gm of substance to 100...

The addition of 3 gm of substance to 100gm `C Cl_(4) (M=154 gm "mol^(-1))` raises the boiling point of `C Cl_(4)` by `0.6^(@)C. K_(b)(C Cl_(4))` is `5.03d kg "mol"^(-1)K, K_(f)(C Cl_(4))` is ` 31.8 kg "mol"^(-1)K` and dencity of solution is 1.64 gm/ml .
The molar mass of the substance is :

A

`37.9`

B

18

C

46.5

D

251.5

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The correct Answer is:
D
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