K_H value for some gases at the same temperature 'T' are given:

gas	KH/k bar
Ar	40.3
CO2	1.67
HCHO	1.83 × 10–5
CH4	0.413

K_H is Henry's Law constant in water. The order of their solubility in water is :

1.	Ar < CO2 < CH4 < HCHO
2.	Ar < CH4 < CO2 < HCHO
3.	HCHO < CO2 < CH4 < Ar
4.	HCHO < CH4 < CO2 < Ar

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 pressures of these solutions is:

Which graph represents the elevation in boiling point?

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

Which graph represents the positive deviation of vapor pressure?

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