Two solutions $A$ and $B$ are separated by a semi-permeable membrane. If liquid flows from $A$ to $B$,then:

Blood cells will remain as such in

The phenomenon of osmosis involves:

At a certain temperature,a $1.6 \%$ solution of an unknown substance is isotonic with a $2.4 \%$ solution of Urea. If both solutions have the same solvent and the same density of $1 \ g/cm^3$,what is the molecular mass of the unknown substance in $g/mol$? [Molecular mass of urea $= 60 \ g/mol$]

The osmotic pressure of $1 \, M$ solution at $27 \, ^\circ C$ is ........... $atm$.

What is a semi-permeable membrane? Give examples.