[" An aqueous solution of methanol in water "],[" has vapour pressure "]

An aqueous solution of methanol on water has vapour pressure:

An aqueous solution of methanol has vapour pressure

An aqueous solution of a non volatile solute is such that the vapour pressure is 25% lesser than that of water at same temperature.The molatiy of the solution will be:

Which of the following aqueous solutions will have maximum vapour pressure?

The vapour pressure of water at room temperature is 30 mm of Hg. If the mole fraction of water in a solution of non volatile solute is 0.9, the vapour pressure of the solution will be :-