Osmotic pressure of the solution can be increased by,

The concentration in $g/L$ of a solution of cane sugar $(M = 342)$ which is isotonic with a solution containing $6 \ g$ of urea $(M = 60)$ per litre is :-

$.......... \%$ percent of glucose solution is isotonic with $1.5 \% \, (w/V)$ urea solution.

The empirical formula of a non-electrolyte is $CH_{2}O$. $A$ solution containing $6 \ g$ of the compound exerts the same osmotic pressure as that of $0.05 \ M$ glucose solution at the same temperature. The molecular formula of the compound is

The osmotic pressure of a decinormal solution of $BaCl_2$ in water is

What does a semi-permeable membrane allow to pass through?