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Which of the following is incorrect?

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Important Questions on Solutions

MEDIUM
Chemistry>Physical Chemistry>Solutions>Colligative Properties
Which one is not equal to zero for an ideal solution?
HARD
Chemistry>Physical Chemistry>Solutions>Colligative Properties
Which of the following statements about the composition of the vapour over an ideal 1 : 1 molar mixture of benzene and toluene is correct? Assume that the temperature is constant at 25oC . (Given vapour pressure data at 25oC , benzene = 12.8 kPa, toluene = 3.85 kPa)
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Chemistry>Physical Chemistry>Solutions>Colligative Properties
A solution at 20oC is composed of 1.5 mol of benzene and 3.5 mol of toluene. If the vapour pressure of pure benzene and pure toluene at this temperature are 74.7 torr and 22.3 torr respectively, then the total vapour pressure of the solution and the benzene mole fraction in equilibrium with it will be, respectively:
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Chemistry>Physical Chemistry>Solutions>Colligative Properties
The vapour pressures of pure liquids A and Bare 400 and 600 mm Hg respectively at 298 K. On mixing the two liquids, the sum of their volumes is equal to the volume of the final mixture. The mole fraction of liquid B is 0.5 in the mixture. The vapour pressure of the final solution, the mole fractions of components A and B in the vapour phase, respectively are 
MEDIUM
Chemistry>Physical Chemistry>Solutions>Colligative Properties
When salt is added to water, which of the following statement is true?
EASY
Chemistry>Physical Chemistry>Solutions>Colligative Properties
For an ideal solution of two components A & B, which of the following is true?
HARD
Chemistry>Physical Chemistry>Solutions>Colligative Properties
Liquids A and B form an ideal solution in the entire composition range. At 350K, the vapour pressure of pure A and pure B are 7×103Pa and 12×103Pa , respectively. The composition of the vapour in equilibrium with a solution containing 40 mole percent of A at this temperature is:
MEDIUM
Chemistry>Physical Chemistry>Solutions>Colligative Properties
At 300 K, the vapour pressure of a solution containing 1 mole of n -hexane and 3 moles of n -heptane is 550 mm of Hg. At the same temperature, if one more mole of n -heptane is added to this solution, the vapour pressure of the solution increases by 10 mm of Hg. What is the vapour pressure in mmHg of n - heptane in its pure state______?
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Chemistry>Physical Chemistry>Solutions>Colligative Properties
A 3ml of solution was made by dissolving 20mg of protein at 0°C. The osmotic pressure of the resulting solution is 3.8 torr. The molecular weight of the protein is approximately (in g/mol)
EASY
Chemistry>Physical Chemistry>Solutions>Colligative Properties
Colligative properties are those properties which depend on
MEDIUM
Chemistry>Physical Chemistry>Solutions>Colligative Properties
For an ideal solution, the correct option is:
EASY
Chemistry>Physical Chemistry>Solutions>Colligative Properties
The colligative properties of a dilute solution depend upon
MEDIUM
Chemistry>Physical Chemistry>Solutions>Colligative Properties
The mixture that forms maximum boiling azeotrope is
EASY
Chemistry>Physical Chemistry>Solutions>Colligative Properties
Which one of the following is incorrect for ideal solution?
MEDIUM
Chemistry>Physical Chemistry>Solutions>Colligative Properties
Solution A contains acetone dissolved in chloroform and solution B contains acetone dissolved in carbon disulphide. The type of deviations from Raoult’s law shown by solutions A and B, respectively are
HARD
Chemistry>Physical Chemistry>Solutions>Colligative Properties
Liquids A and B form ideal solution for all compositions of A and B at 25∘C. Two such solutions with 0.25 and 0.50 mole fractions of A have the total vapor pressures of 0.3 and 0.4 bar, respectively. What is the vapor pressure of pure liquid B in bar?
EASY
Chemistry>Physical Chemistry>Solutions>Colligative Properties
The mixture which shows positive deviation from Raoult’s law is
HARD
Chemistry>Physical Chemistry>Solutions>Colligative Properties
Mixture(s) showing positive deviation from Raoult's law at 35oC is (are)
MEDIUM
Chemistry>Physical Chemistry>Solutions>Colligative Properties
A solution of urea (molar mass 60 g mol-1) boils at 100.20°C at the atmospheric pressure. if Kf and Kb for water are 1.86 and 0.512 KKgmol-1 respectively. The freezing point of the solution will be
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Chemistry>Physical Chemistry>Solutions>Colligative Properties
The solution which will freeze at the lowest temperature is