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The vapour pressure of benzene at80^(@)C...

The vapour pressure of benzene at`80^(@)C` is lowered by `10mm` by dissoving `2g`of a non-volatile substance in`78g`of benzene .The vapour pressure of pure benzene at `80^(@)C`is `750mm`.The molecular weight of the substance will be:

A

`15`

B

`150`

C

`1500`

D

`2000`

Text Solution

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The correct Answer is:
B
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