Two liquids X and Y on mixing gives a warm solution. The solution is __________

(a)

ideal

(b)

non-ideal and shows positive deviation from Raoults law

(c)

ideal and shows negative deviation from Raoults Law

(d)

non-ideal and shows negative deviation from Raoults Law

The relative lowering of vapour pressure of a sugar solution in water is 3.5\(\times\)10^–3. The mole fraction of water in that solution is ___________

(a)

0.0035

(b)

0.35

(c)

0.0035/18

(d)

0.9965

For a solution, the plot of osmotic pressure (\(\pi\)) verses the concentration (c in mol L^–1) gives a straight line with slope 310R where 'R' is the gas constant. The temperature at which osmotic pressure measured is ____________

(a)

310 x 0.082 K

(b)

310^oC

(c)

37^oC

(d)

\({310\over 0.082}K\)

The Van't Hoff factor (i) for a dilute aqueous solution of the strong elecrolyte barium hydroxide is _____________

(a)

0

(b)

1

(c)

2

(d)

3

What is the molality of a 10% W/W aqueous sodium hydroxide solution ?

(a)

2.778

(b)

2.5

(c)

10

(d)

0.4