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The vapour pressure of pure benzene and ...

The vapour pressure of pure benzene and toulene at a particular temperature are 100 mm and 50 mm respectively. Then the mole fraction of benzene in vapour pressure is constant with equimolar soluton of benzene and toulene is

A

0.67

B

0.75

C

0.33

D

0.5

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The correct Answer is:
0.2
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