JEE Main & Advanced
Sample Paper
JEE Main - Mock Test - 1
question_answer
The value of \[P{}^\circ \] for benzene is \[640\text{ }mm\] of \[Hg\]. The vapour pressure of solution containing \[2.5g\] substance in \[39g\] benzene is 600mm of Hg. What is the molecular mass of X?