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The vapour pressure of a solution having...

The vapour pressure of a solution having 2.0g of a solute X (molar mass 32 g `mol^(-1))` in 100g of `CS_(2)` (vapour pressure 854 Torr) is 848.9 Torr. The molecular formula of the solute is

A

X

B

`X_(2)`

C

`X_(4)`

D

`X_(8)`

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The correct Answer is:
D
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