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:

1.	P2 > P3 > P1	2.	P3 > P1 > P2
3.	P2 > P1 > P3	4.	P1 > P2 > P3

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 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

The law represented by given graph is -

Points A and B in the below-mentioned graph represent, respectively:

The graph representing Henry's law is given below:

The value of the slope will be

The type of molecular interactions in a solution of alcohol and water is -

A sample of drinking water was contaminated with chloroform. The level of contamination was 15 ppm (by mass). The mass percent of chloroform is:

1. $15\times {10}^{-4}$

2. $1.5\times {10}^{-4}$

3. $0.15\times {10}^{-4}$

4. $15\times {10}^{-5}$

An antifreeze solution is prepared from 222.6 g of ethylene glycol (C₂H₆O₂) and 200 g of water. The molality of the solution would be -