During osmosis,the flow of water through a semipermeable membrane 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 $atm$)

If $20 \ g$ of a solute was dissolved in $500 \ mL$ of water and the osmotic pressure of the solution was found to be $600 \ mm$ of $Hg$ at $15 \ ^oC$,then the molecular weight of the solute is:

The empirical formula of a non-electrolyte is $CH_2O$. $A$ solution containing $3 \ g$ of the compound exerts the same osmotic pressure as that of $0.05 \ M$ glucose solution. The molecular formula of the compound is

Solutions having the same osmotic pressure under a given set of conditions are known as

Which of the following aqueous solutions should have the highest osmotic pressure?