Which of the following can pass through a semi-permeable membrane?

Which one of the following is an isotonic pair of solutions?

If $3 \ g$ of glucose (molar mass $= 180 \ g \ mol^{-1}$) is dissolved in $60 \ g$ of water at $15^{\circ} C$,the osmotic pressure of the solution will be (in $atm$)

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

Which method is used to measure the osmotic pressure of an aqueous solution?

The osmotic pressure of blood at $300 \ K$ is $8.21 \ atm$. What is the concentration of an aqueous glucose solution that is isotonic with this blood in $g \ L^{-1}$?