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1. Which of the following will have the highest freezing point at one atmosphere?
a) 0.1 M NaCI solution b) 0.1 M sugar solution c) 0.1 M BaCl2 solution d) 0.1 M FeCl3 solution
2. How many grams of concentrated nitric acid solution should be used to prepare 250 ml of 2.0 M HNO2? The
concentrated acidic is 70% HNO3
a) 90.0 gconc. HNO3 b) 70.0 gconc. HNO3 c) 54.0 gconc. HNO3 d) 45.0 gconc HNO3
3. Which of the following statements is not correct?
a) 5% aqueous solutions of NaCl and KCl are said to be isomolar.
b) 1M sucrose solution and 1M glucose solution are isotonic.
c) Molecular mass of acetic acid and benzoic acid is higher than normal mass in cryoscopic methods.
△T K
d) For the same solution, △T b = K b
f f

4. Blood cells retain their normal shape in solutions which are

a) hypotonic to blood b) isotonic to blood c) hypertonic to blood d) equinormal to blood
5. When methyl alcohol is added to water, boiling point of water decreases.
When a volatile solute is added to a volatile solvent elevation in boiling point is observed.
Both assertion and reason are true and reason is the correct explanation
a) of the assertion
b) Both assertion and reason are true but reason is not thecorrect explarnation of assertion
c) Assertion is true but reason is false d) Both assertion and reason are false
6. A solute X when dissolved in a solvent associates to form a pentamer. The value of van't Hoff factor (i) for the
solute will be
a) 0.5 b) 5 c) 0.2 d) 0.1
7. Which one of the following salts will have the same value of van't Hoff factor (i) as that of K4 [Fe(CN)6 ]?
a) Al2 (SO4 )3 b) NaCl c) Al(NO3 )3 d) Na2 SO4
8. The value of van't Hoff factors for KCI, NaCl and K2SO4 respectively are
a) 2, 2 and 2 b) 2, 2 and 3 c) 1, 1 and 2 d) 1, l and 1
9. Which one of the following modes of expressing concentration is independent of temperature?
a) Molarity b) Molality c) Formality d) Normality
10. Given below are few mixtures formed by mixing two components. Which of the following binary mixtures will
have same composition in liquid and vapour phase?
(i) Ethanol + Chloroform
(ii) Nitric acid + Water
(iii) Benzene + Toluene
(iv) Ethyl chloride + Ethyl bromide
a) (i) and (iii) b) (i) and (ii) c) (i), (ii) and (iii) d) (iii) and (iv)
11. What weight of glycerol should be added to 600 g of water in order to lower its freezing point by 10 °C? Given that
(Kf= 1.86°C.m-1)
a) 496 g b) 297 g c) 310 g d) 426 g
12. Which of the following statements is correct?
a) A saturated solution will remain saturated at all temperatures.

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b) A plant cell swells when placed in hypertonic solution.

c) The depression in freezing point is directly proportional to molality of the solution.
d) Lowering in vapour pressure is a colligative property.
13. For an ideal solution with pA> pB, which of the following is true?
a) (xA)liq = (xA)vap b) (xA)liq> (xA)vap c) (xA)liq> (xB)vap
d) (xA)liq and (xA)vap do not bear any relationship with each other
14. The vapour pressures of ethanol and methanol are 44.5 mm Hg and 88.7 mm Hg respectively. An ideal solution is
formed at the same temperature by mixing 60 g of ethanol with 40 g of methanol. The total vapour pressure of
the solution and the mole fraction of methanol in the vapour are respectively.
a) 43.46 mm and 0.51 b) 66.15 mm and 0.657 c) 66.15 mm and 0.791 d) 70.59 mm and 0.657
15. Match the column I with column II and mark the appropriate choice.
Column I Column II
(A)Ethyl alcohol + Water(i) p = pox
(B)Benzene + Toluene (ii) Effect of pressure on gas solutions
(C)Henry's law (iii)Ideal solution
(D)Raoult's law (iv)Azeotropic mixture
a) (A) ⟶ (i), (B)⟶(ii), (C)⟶(iii), (D)⟶(iv) b) (A) ⟶ (i), (B) ⟶ (iii), (C) ⟶ (ii), (D) ⟶ (iv)
c) (A)⟶ (iv), (B)⟶ (iii), (C)⟶ (ii), (D)⟶ (i) d) (A)⟶ (iii), (B)⟶ (ii), (C)⟶ (i), (D)⟶ (iv)
16. 4 L of 0.02 M aqueous solution of NaCI was diluted by adding one litre of water. The molality of the resultant
solution is_____________.
a) 0.004 b) 0.008 c) 0.012 d) 0.016
17. What will be the freezing point of a 0.5 m KCI solution? The molal freezing point constant of water is 1.86 °C m-1.
a) -1.86°C b) - 0.372 °C c) - 3.2 °C d) O°C
18. Aquatic species are more comfortable in warm waters than cold waters.
KH values for both N2 and O2 decrease with increase of temperature.
a) If both assertion and reason are true and reason is the correct explanation of assertion.
b) If both assertion and reason are true but reason is not the correct explanation of assertion.
c) If assertion is true but reason is false. d) If both assertion and reason are false
19. At equilibrium the rate of dissolution of a solid solute in a volatile liquid solvent is______________.
a) less than the rate of crystallisation b) greater than the rate of crystallisation
c) equal to the rate of crystallisation d) Zero
20. What is the mass percentage of carbon tetrachloride if 22g of benzene is dissolved in 122g of carbon
tetrachloride?
a) 84.72% b) 15.28% c) 50% d) 44%
21. Relative lowering of vapour pressure, osmotic pressure of a solution and elevation in boiling points
are___(p)_____properties. Osmosis is the passage of____(q)____through a semipermeable membrane from a
solution of_____(r)_____towards a solution of ____(s)_____. Osmotic pressure is equivalent to mechanical pressure
which must be applied on____(t)_____to prevent osmosis.
In the above paragraph p, q, r, s and t respectively are
a) colligative, solution, higher concentration, lower concentration, solution
b) colligative, solvent, higher concentration, lower concentration, solution
c) colligative, solution, lower concentration, higher concentration, solvent
d) colligative, solvent, lower concentration, higher concentration, solution.
22. Which of the following relations is not correctly matched with the formula?
i−1 i−1
a) In case of association, ∝= 1 b) In case of association, ∝= n+1
n−1

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PAo −PA n
c) Relative lowering of vapour pressure=
PAo
= i nA +BnB
W ×1000
d) Elevation in boiling point, △Tb = kb × MB ×W
B A

23. Vapour pressure of a pure liquid X is 2 atm at 300 K. It is lowered to 1 atm on dissolving 1 g of Y in 20 g of liquid
X. If molar mass of X is 200, what is the molar mass of Y?
a) 20 b) 50 c) 100 d) 200
24. Fill in the blanks with appropriate words.
Azeotropic mixtures boil without change in their ________. Azeotropic mixtures exist in solutions showing
___________ or ____________ deviations. ____________ solutions do not form azeotropes. van't Hoff factor for an
electrolyte is ____________ than 1.
a) colour, positive, negative, non-ideal, greater b) properties, positive, negative, ideal, smaller
c) boiling point, positive, negative, non-ideal, lesser d) composition, positive, negative, ideal, greater
25. In the given graph, pq, qr and st represent

a) pq ⟶ liquid state of solution, qr ⟶ solid state of solution, st ⟶ liquid state of solvent

b) pq ⟶ liquid state of solvent, qr ⟶ solid state of solvent, st ⟶ liquid state of solution
c) pq ⟶ liquid state of solvent, qr ⟶ solid state of solution, st ⟶ liquid state of solution
d) pq ⟶ solid state of solvent, qr ⟶ liquid state of solvent, st ⟶ solid state of solution.
26. The mole fraction of the solute in one molal aqueous solution is:
a) 0.009 b) 0.018 c) 0.027 d) 0.036
27. The molality of 648 g of pure water is:
a) 36 m b) 55.5 m c) 3.6 m d) 5.55 m
28. Camphor is often used in molecular mass determination because
a) It is readily available b) It has a very high cryoscopic constant c) It is volatile
d) It is solvent for organic substances
29. The mixture which shows positive deviation from Raoult's law is
a) Chioroethane + Brornoethane b) Ethanol + Acetone c) Benzene + Toluene d) Acetone + Chloroform
30. Molarity of liquid HCl, if density of solution is 1.17g/cc is :
a) 36.5 b) 18.25 c) 32.05 d) 42.10
31. How many grams of NaOH are present in 250 mL of 0.5 M NaOH solution?
a) 7.32 g b) 3.8 g c) 5 g d) 0.5 g
32. 0.5 molal aqueous solution of a weak acid (HX) is 20% ionized. If kf for water is 1.86 K-kg-mol -1, the lowering in
freezing point of the solution is :
a) -1.12 K b) 0.56 K c) 1.12 K d) - 0.56 K
33. 25.3 g of sodium carbonate, Na2CO3 is dissolved in enough water to make 250 mL of solution. If sodium
carbonate dissociates completely, molar concentration of sodium ion, Na+ and carbonate ion, CO32- are
respectively (Molar mass of Na2CO3 = 106 g mol-1)
a) 0955M and 1.910M b) 1.910M and 0.955M c) 1.90M and 1.910M d) 0.477M and 0.477M
34. How much C2H5OH must be added to 1.0 L of H2O, so that solution should not freeze at - 4° F?
[Kf(C2H5OH) = 1.86°C/ m]

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a) < 10.75 g b) > 494.5 g c) < 20 g d) 494.5 g

35. : In an ideal solution, △ mixH is zero.
In an ideal solution, A - B interactions are lower than A - A and B - B interactions.
a) If both assertion and reason are true and reason is the correct explanation of assertion.
b) If both assertion and reason are true but reason is not the correct explanation of assertion.
c) If assertion is true but reason is false. d) If both assertion and reason are false
36. Decrease in the vapour pressure of water by adding 1 mol of sucrose to one kg of water is higher to
that produced by adding 1 mol of urea to the same quantity of water at the same temperature.
Molecular mass of sugar is less than that of urea.
a) If both assertion and reason are true and reason is the correct explanation of assertion.
b) If both assertion and reason are true but reason is not the correct explanation of assertion.
c) If assertion is true but reason is false. d) If both assertion and reason are false
37. All form ideal solution except
a) C6 H6 and C6 H5 CH3 b) C2 H5 Cl and C2 H5 I c) C6 H5 Cl and C6 H5 Br d) C2 H5 I and C2 H5 OH
38. Which of the following representations of i (van't Hoff factor) is not correct?
Norma molecular mass Number of molecules actually present
a) i= b) i=
Observed molecular mass Number of molecules expected to be present
Total number of particles taken before association/dissciation Observed colligative property
c) i= d) i= Expected colligative property
Number of particles after association/dissociation
39. An aqueous solution is 1.00 molal in KI. Which change will cause the vapour pressure of the solution to increase?
a) Addition of NaCl b) Addition of Na2SO4 c) Addition of 1.00 molal KI d) Addition of water
40. When solution is separated from the pure solvent by a semipermeable membrane, the solvent
molecules pass through it from pure solvent side to the solution side.
Diffusion of solvent occurs from a region of high concentration solution to a region of low concentration
solution.
Both assertion and reason are true and reason is the correct explanation
a) of the assertion
b) Both assertion and reason are true but reason is not thecorrect explarnation of assertion
c) Assertion is true but reason is false d) Both assertion and reason are false
41. Colligative properties depend on ______________ .
a) the nature of the solute particles dissolved in solution b) the number of solute particles in solution
c) the physical properties of the solute particles dissolved in solution d) the nature of solvent particles
42. If molality of the dilute solution is doubled, the value of molal depression constant (Kf) will be :
a) doubled b) halved c) tripled d) unchanged
43. Which of the following is dependent on temperature?
a) Molarity b) Mole fraction c) 'Weight percentage d) Molality
44. Express the terms representing the following formulae.
No. of moles of solute
(i) =(W)
V olume of solution in litres
No. of moles of solute
(ii) =(X)
Mass of solvent in kg
No. moles of component
(iii) Moles in the solution =(Y)
Mass of component
(iv) =(Z)
Mass of solution
a) b)
W X Y Z W X Y Z
MolalityMolarityMass fractionMole fraction MolalityMolarityMass fractionMole fraction

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c) d)
W X Y Z W X Y Z
MolarityMolalityMole fractionMass fraction MolarityMolalityMole fractionMass fraction
45. Which of the aqueous equimolal solution will have its vapour pressure near to solvent?
a) Urea b) Ba(NO3)2 c) NaNO3 d) AI(NO3)3

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