One molal solution contains 0.5 moles of a solute in:
 

1.	1000 g of solvent	2.	500 mL of solvent
3.	500 g of solvent	4.	100 mL of solvent

One mole of sugar is dissolved in three moles of water at 298 K. The relative lowering of vapour pressure is:

The correct option for the value of vapour pressure of a solution at 45 $°$C with benzene to octane in a molar ratio 3:2 is:

[At 45 $°$C vapour pressure of benzene is 280 mm Hg and that of octane is 420 mm Hg. Assume Ideal gas]
1. 336 mm of Hg
2. 350 mm of Hg
3. 160 mm of Hg
4. 168 mm of Hg

The following solutions were prepared by dissolving 10 g of glucose (C₆H₁₂O₆) in 250 ml of water (P₁), 10 g of urea (CH₄N₂O) in 250 ml of water (P₂) and 10 g of sucrose (C₁₂H₂₂O₁₁) in 250 ml of water (P₃). The decreasing order of osmotic the pressure of these solutions is:

The correct graph amongst the following, that represents the elevation in boiling point is:

1.
2.
3.
4.	None of the above.

The graph, amongst the following, representing positive deviation of vapour pressure is-

1.		2.
3.		4.	None of the above