At $298 \, K$,the ratio of osmotic pressures of two solutions of a substance with concentrations of $0.01 \, M$ and $0.001 \, M$ respectively,is

$A$ solution is prepared by dissolving $0.3 \ g$ of a non-volatile non-electrolyte solute '$A$' of molar mass $60 \ g \ mol^{-1}$ and $0.9 \ g$ of a non-volatile non-electrolyte solute '$B$' of molar mass $180 \ g \ mol^{-1}$ in $100 \ mL$ $H_2O$ at $27^{\circ}C$. Osmotic pressure of the solution will be
[Given: $R=0.082 \ L \ atm \ K^{-1} \ mol^{-1}$] (in $atm$)

What is the numerical value of osmotic pressure of $1 \ M$ urea solution if the numerical value of osmotic pressure of $0.5 \ M$ urea solution is $x$?

The osmotic pressure of which solution is maximum? (Consider that a $0.1 \ M$ solution of each is $90\%$ dissociated.)

$A$ solution containing $10 \ g$ per $dm^3$ of urea (molecular mass $= 60 \ g \ mol^{-1}$) is isotonic with a $5 \%$ solution of a non-volatile solute. The molecular mass of this non-volatile solute is ........ $g \ mol^{-1}$.

In a container,$0.1 \, M \, NaCl$ and $0.05 \, M \, BaCl_2$ solutions are separated by a semi-permeable membrane. Which of the following is correct?