MCQ
Two beakers $A$ and $B$ containing pure water and aqueous solution are shown. What  will be observed gradually with passage of time ?
  • A
    Level of water in beaker $A$ becomes lower than level of solution in beaker $B$
  • B
    Level of water in beaker $A$ and level of solution in beaker $B$ remains constant
  • Level of water in beaker $A$ increases and that of solution in beaker $B$ decreases
  • D
    Level of both the beakers increases

Answer

Correct option: C.
Level of water in beaker $A$ increases and that of solution in beaker $B$ decreases
c
$\mathrm{P}_{\mathrm{s}}=150-60 \mathrm{X}_{\mathrm{B}}$

For pure  $\mathrm{B}, \mathrm{X}_{\mathrm{B}}=1$,     $\mathrm{P}_{\mathrm{s}}=\mathrm{p}_{\mathrm{B}}^{o}=90$

For pure  $\mathrm{A}, \mathrm{X}_{\mathrm{B}}=0$,     $\mathrm{P}_{\mathrm{s}}=\mathrm{p}_{\mathrm{A}}^{o}=150$

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