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Solutions Test - 4

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Solutions Test - 4
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  • Question 1
    1 / -0
    A 0.100 m solution of NaClO3 freezes at – 0.343oC. At 0.001 m concentration of the same salt, the electrical interferences between the ions no longer exist, because on an average, the ions are too far from each other.

    The degree of dissociation of a 0.100 m NaCl solution is
  • Question 2
    1 / -0

    Raoult’s law states that for a solution of volatile liquids the partial pressure of each component in the solution is

    Solution

    Raoult’s law states that for a solution of volatile liquids the partial pressure of each component in the solution is directly proportional to mole fraction of component.

  • Question 3
    1 / -0
    The molality of a solute in a solution is the
  • Question 4
    1 / -0

    Molality of a solution relates the

    Solution

    Molality is number of moles of solute dissolved in per Kg of solvent.

  • Question 5
    1 / -0
    A solution of sucrose in 100 g of water boils at 100.25°C. If this solution is boiled till its temperature becomes 101°C, the mass of water evaporated from the solution is
  • Question 6
    1 / -0

    Example of solution of liquid in gas is

    Solution

    Solute is water (liquid) and solvent is gas( air).

  • Question 7
    1 / -0
    Which of the following is true?
  • Question 8
    1 / -0
    Which of the following is true?
  • Question 9
    1 / -0
    An aqueous solution of an ionic salt having molality equal to 0.1892 freezes at – 0.704oC. What is the van't Hoff factor of the salt? (Given Kf for water = 1.86 K/m)
  • Question 10
    1 / -0
    Which of the following is not a colligative property?
  • Question 11
    1 / -0
    The freezing point of equimolal solution will be the lowest for
  • Question 12
    1 / -0
    At a certain temperature, the vapour pressures of benzene and toluene are 119 torr and 37 torr, respectively. The mole fraction of toluene in the vapour phase, which is in equilibrium with a solution of benzene and toluene in 1 : 1 molar ratio, is
  • Question 13
    1 / -0
    The expression relating molarity of a solution with its molality is (where the various symbols have their usual meanings)
  • Question 14
    1 / -0
    The vapour pressures of pure benzene and toluene are 160 Torr and 60 Torr, respectively. The mole fraction of benzene in vapour phase in contact with equimolar solution of benzene and toluene would be
  • Question 15
    1 / -0
    A non-ideal solution was prepared by mixing 30 ml chloroform and 50 ml acetone. The volume of the mixture will be
  • Question 16
    1 / -0
    The boiling point of a solution at a height of 10 km above the sea level is
  • Question 17
    1 / -0
    The expression to compute the molar mass of a solute from the elevation of boiling point of a solvent is (where the various symbols have their usual meanings)
  • Question 18
    1 / -0
    The osmotic pressure of 0.1 M sodium chloride solution at 27°C is
  • Question 19
    1 / -0

    Which law shows relation between pressure and solubility of a gas in solvent

    Solution

    Henry’s Law states that as the partial pressure of gas increases over liquid solubility of gas also increases.

  • Question 20
    1 / -0
    For a dilute solution, Raoult`s law states that
  • Question 21
    1 / -0

    Minimum boiling azeotrope is form by the solution which show

    Solution

    Positively deviated non ideal solution forms Minimum boiling Point azeotropes.

  • Question 22
    1 / -0
    Which of the following statements is not true about ideal solutions?
  • Question 23
    1 / -0
    Which of the following solutions will show positive deviation from ideal behaviour?
  • Question 24
    1 / -0
    The vapour pressure lowering of a solvent is proportional to
  • Question 25
    1 / -0
    In the phenomenon of osmosis through semi-permeable membrane,
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