$A$ semipermeable membrane used in the measurement of osmotic pressure of a solution allows the passage of

Which of the following will have the minimum osmotic pressure?

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

The osmotic pressure (in $atm$) of an aqueous solution containing $0.01 \ mol$ of $NaCl$ (degree of dissociation $0.94$) and $0.03 \ mol$ of glucose in $500 \ mL$ at $27^{\circ} C$ is $\left(R=0.082 \ L \ atm \ K^{-1} \ mol^{-1}\right)$

Which one of the following solutions of compounds shows the highest osmotic pressure? ($AB, AB_2$ and $A_2 B_3$ are ionic compounds)

At which temperature does a $0.006\% \ w/V$ urea solution have an osmotic pressure of $0.0246 \ atm$ (in $K$)?