Types of solutions

1.Match the following :

List - I List – II
I) Solid in gas A) Brass
II) Solid in solid B) Amalgam
III) liquid in solid C) Comphor in air
IV) liquid in liquid D) Alcohol in water
Which of the following is correct ?
I II III IV I II III IV
1) C A B D 2) A C D B
3) C B A D 4) D A B C
2.Match the items given in Column I with the type of solutions given in Column II.
Column-I Column-II
(a) Soda water (i) A solution of gas in solid
(b) Sugar solution (ii) A solution of gas in gas
(c) German silver (iii) A solution of solid in liquid
(d) Air (iv) A solution of solid in solid
(e) Hydrogen gas in palladium (v) A solution of gas in liquid
A B C D E A B C D E
1) III V IV II I 2) V III I IV II
3) V III IV II I 4) III V IV I II
Concentration terms
3. 3.7g of calcium hydroxide is present in 100 ml of solution. The Normality of the
solution is
1) 2 N 2) 0.5 N 3) 1 N 4) 0.25 N
4.A sample of NaOH weighing 0.4 g. is added to 100 ml of 0.1N H2SO4 solution. The
nature of the resulting solution is
1) Acidic 2) basic 3) neutral 4) amphoteric
5.What is the number of g.equivalents of KMnO4 (Mol. wt - 158) present in 250 ml. of
0.04N KMnO4?
1) 0.01 2) 0.05 3) 0.04 4) 0.07
6.If 2.5 L of 1 M NaOH solution is mixed with another 3 L of 0.5 M NaOH solution,
then find out the molarity of the resultant solution.
1) 0.80 M 2) 1.0 M 3) 0.73 M 4) 0.50 M
−1
7.About 3.0 molal NaOH solution has a density of 1.110 gmL . The molarity of the
solution is :
1) 2.9732 2) 3.05 3) 3.64 4) 3.0504
8.when 5.0 g of BaCl2 is dissolved in 10 gram water, then the concentration of
6

solution is :
1) 2.5 ppm 2) 5 ppm 3) 5 M 4) 5 g L−1
9.If mole fraction of I 2 in C6 H6 is 0.2, then molality of I 2 in C6 H6 is :
1) 2.3 m 2) 4.5 m 3) 3.2 m 4) 6.4 m
10.What will be the molarity of a solution containing 5 g of sodium hydroxide in 250
m L solution ?
 1) 0.5 2) 1.0 3) 2.0 4) 0.1
−3
11.If the density of a 15%(wt / vol) H 2SO4 solution is 1.1g cm , the molality will be
approximately :
1) 1.2 2) 1.4 3) 1.8 4) 1.6
12. Match the terms given in Column I with expressions given in Column II.
Column-I Column-II
(I) Mass percentage (A) Number of moles of the solute component
Volume of solution in litres
(II) Volume (B) Number of moles of a component
percentage Total number of moles of all the components
(III) Mole fraction (C) Volume of the solute component in solution
100
Total volme of solution
(IV) Molality (D) Mass of the solute component in solution
100
Total mass of the solution
(V) Molarity (E) Number of moles of the solute components
Mass of solvent in kilograms

A B C D E A B C D E
1) I II III IV V 2) IV III II V I
3) IV III V II I 4) IV III II I V
13.What will be the mass percentage of aspirin (C9 H8O4 ) in acetonitrile (CH 3CN)
when 6.5 g of C9 H8O4 is dissolved in 450 g of CH3CN?
1) 2.848% 2) 1.424% 3) 14.24% 4) 28.48%
14.Concentrated nitric acid used in laboratory work is 68% nitric acid by mass in
aqueous solution. What should be the molarity of such a sample of the acid if
the density of the solution is 1.504g mL−1 ?
1) 1.623 M 2) 16.23 M 3) 162.3 M 4) 0.1623 M
15.What is the molarity of H 2SO 4 solution, which has a density 1.84g cm−3 at 350 C
and contains 98% by weight?
1) 18.4 M 2) 18 M 3) 4.18 M 4) 8.14 M
16.The concentration unit, independent of temperature, would be :
1) Normality 2) Weight volume percentage
3) Moality 4) Molarity
17.The molality of a solution having 18 g of glucose (molecular weight = 180) dissolved
in 50 g of water is :
1) 0.2 m 2) 0.1 m 3) 2.2 m 4) 0.5 m
18.The molarity of pure water is :
1) 18.36 M 2) 1.16 M 3) 55.56 M 4) 5.56 M
19.An aqueous solution of methyl alcohol contains 48g of alcohol. The mole fraction
of alcohol is 0.6. The weight of water in it is
1) 27g 2) 2.7g 3)18g 4) 1.8g
20.Number of milli equivalents of solute present in 250ml of 0.1M oxalic acid
solution are
1) 25 2) 50 3) 250 4) 125
21. 138grams of ethyl alcohol is mixed with 72 grams of water. The ratio of mole
fraction of alcohol to water is
1) 3 : 4 2) 1 : 2 3)1 : 4 4) 1 : 1
22.Molality of 2.5g of ethanoic acid CH3COOH in 75g of benzene is
1) 0.278 mole kg-1 2) 0.556 molkg-1 3) 5.56mol kg- 4) 27.8 mol kg-1
23.Molarity of 4% (w/v) solution of NaOH is
1) 0.1 2) 0.5 3) 0.001 4)1.0
24.M = molarity of the folution ,m = molality of the solution
d=density of the solution (in g.ml-1) M1 = gram molecular weigiht of solute.
Which of the following relations is correct?
M M  1000 M 1000 m 1000
1) 2) m = 3) m = 4) M =
1000d − MM 1
d + MM 1
(1000  d ) − MM 1
(1000  d ) − MM 1
25.A solution is obtained by mixing 300g of 25% solution and 400g of 40% solution
by mass. Calculate the mass percentage of the resulting solution.
1) 66.66% 2)3.36% 3) 33.6% 4) 22.4%
26.Assertion (A): Solution containing 1 gram equivalent of solute per litre is known
as 1N solution.
Reason (R) : N = M × n-factor
1) Both A & R are correct and R is correct explanation of A.
2) Both A & R are correct but R is not correct explanation of A.
3) A is correct and R is incorrect. 4) Both A and R are incorrect.
27.Which of the following is independent of temperature and does not have units ?
1) Mole fraction 2) Molarity 3) Molality 4) Normality
28.Two solutions of a non-electrolyte are mixed in the following manner. 480 mL of
1.5M first solution +520mL of 1.2M second solution. What is the molarity of
the final solution?
1) 1.344M 2) 2.70M 3) 1.20M 4) 1.50M

Solubility and henrys law

29.Four gases like H2, He, CH4 and CO2 have Henry’s constant values KH are 69.16,
144.97, 0.413 and 1.67. The gas which is more soluble in liquid is
1) He 2) CH4 3) H2 4) CO2
30.The value of Henry’s constant K H is :
1) Greater for gases with higher solubility.
2) Greater for gases with lower solubility.
31.The solubility of gas in a liquid increases with
1) Increase of temperature 2) Reduction of gas pressure
3) Decrease in temperature 4) Both (2) and (3)
32.When a saturated solution of KCI is heated it becomes.
1)Unsaturated 2)Supersaturated 3)Remains saturated 4)Attains equilibrium
33.Which of these curves represents Henry’s law graph between partial pressure on
y-axis mole fraction of gas on x-axis.
34.The tanks used by scuba divers are filled with air diluted with 11.7% He,
1) 56.2% N2 and 32.1% O2 2) 56.2% O2 and 32.1% N2
3) 50.2% N and 38.1% O2 4) 50.2% O2 and 38.1% N2
35.The blocking of capillaries due to sudden releases of bubbles of N2 gas in blood is
known as
1) Bends 2) Blends 3) Mends 4) All of these
36.Which gas is most soluble in water?
1) He 2) H2 3) NH3 4) CO2
Vapour pressure and raoults law
37.A solution containing components A and B follows raoult’s law
1) A – B attraction force is greater than A – A and B – B
2) A – B attraction force is less than A – A and B – B
3) A – B attraction force remains same as A - A and B – B
4) Volume of solution is different from sum of volumes of solute and solvent
38.Which is the incorrect statement ?
1) When mixture is less volatile, there is positive deviation from Raoult’s law.
2) Vapour pressure of the solution is less than that of pure solvent.
3) When mixture is less volatile, there is negative deviation from Raoult’s law.
4) When mixture is more volatile, there is positive deviation from Raoult’s law.
39.Which of the following statements is correct for a binary solution which shows
negative deviation from Raoult’s law ?
1) When solutions form, their volumes are more than the sum of the volumes of their
components.
2) When solutions form, their volumes are smaller than the sum of the volumes of
their components.
3) Neither heat is released nor heat is absorbed during the formation of the solution.
4) Heat is absorbed during the formation of the solution.
40.The pair of boiling point and compound is given as :
C6 H 6 , CH3OH C6 H5 NO2 C6 H5 NH 2
800 C 650 C 2120 C 1840 C
(I) (II) (III) (IV)
Which will show the lowest vapour pressure at room temperature ?
1) C6 H6 2) CH 3OH 3) C6 H5 NO2 4) C6 H5 NH2
41.If solubility of any gas in the liquid at 1 bar pressure is 0.05mol/L. What will be
its solubility at 3 bar pressure, keeping the temperature constant?
0.05
1) mol / L 2) 0.15mol / L 3) 0.05mol / L 4) 1.0mol/L
3
42.A mixture of ethyl alcohol and propyl alcohol has a vapour pressure of 290mm at
300K. The pure vapour pressure of propyl alcohol is 200mm. If the mole fraction of
ethyl alcohol is 0.6, its pure vapour pressure (in mm) at the same temperature will
be
 1) 360 2) 350 3) 300 4)700
43.The vapour pressure of two pure liquids (A) & (B) are 100 & 80 torr. The totalm
pressure of the solution obtained by mixing 2 mol. of (A) and 3 mol of (B) would
be
1) 20 torr 2) 36 torr 3) 88 torr 4) 180 torr
44.Mixture of volatile components and has total vapour pressure (in torr):
P = 254 − 119 X A Where X A is mole fraction of A in mixture? Hence, PA0 & PB0
are ______ respectively.
1)254, 119 2) 119, 254 3) 135, 254 4) 154, 119
45.A mixture of A and B, which are two miscible liquids, is distilled under equilibrium
conditions at atmospheric pressure. The mole fraction of A in solution is 0.3
and in vapour phase is 0.6. If the solution behaves ideally the ratio of PA0 to PB0
is:
1) 4.0 2) 2.5 3) 3.5 4) 1.5
46.For a dilute solution, Raoult’s law states that:
1) The lowering of vapour-pressure is equal to the mole-fraction of solute
2) The relative lowering of vapour-pressure is equal to the mole fraction of
solute
3) The relative lowering of vapour-pressure is proportional to the amount of
solute in solution
4) The vapour-pressure of the solution is equal to the mole-fraction of solvent
47.Which graph of the following represents the graph between log p (on Y - axis) and
1/T (on X - axis)?

1) 2) 3) 4)
48.According to Raoult's law, relative lowering of vapour pressure for a solution is
equal to
1) moles of solute 2) moles of solvent
3) mole fraction of solute 4) mole fraction of solvent
49.If PA0 is the vapour pressure of a pure liquid A and the mole fraction of A in the
mixture of two liquids A and B is x, the partial vapour pressure of A is :
x (1 − x ) 0
1) (1 − x ) PA0 2) xPA0 3) PA0 4) PA
(1 − x) x
50.In a mixture of A and B if the mole fraction of the component A in vapour phase is
x1 and mole fraction of component A in liquid mixture is x2 ( PA0 = vapour
pressure of pure A; PB0 = vapour pressure of pure B), then total vapour pressure
of the liquid mixture is :
P0 x P0 x P0 x P0 x
1) A 2 2) A 1 3) B 1 4) B 2
x1 x2 x2 x1
51.If P0 and P are the vapour pressures of a solvent and its solution, respectively, and
N 1 and N 2 are the mole fractions of the solvent and solute, respectively, then
correct relation is :
 1) P = P0 N1 2) P = P 0 N 2 3) P = P N 2 4) P = P0 ( N1 / N2 )
52.At 40 0 C, the vapour pressure in Torr of methanol and ethanol solution is
P = 119x + 135, where x is the mole fraction of methanol. Hence:
1) Vapour pressure of pure methanol is 119 Torr.
2) Vapour pressure of pure ethanol is 135 Torr.
3) Vapour pressure of equimolar mixture of each is 127 mm.
4) Mixture is completely immiscible.
53.What will be the mass of a non-volatile solute (molar mass 40g mol−1 ) which should
be dissolved in 114 g octane to reduce its vapour pressure to 80% ?
1) 10 g 2) 4 g 3) 2 g 4) 16 g
54.Vapour pressure of water at 293 K is 17.535 mmHg. What will be the vapour
pressure of water at 293 K when 25 g of glucose is dissolved in 450 g of water ?
1) 17.44 mm Hg 2) 174.4 mm Hg 3) 34.88 mm Hg 4) 8.72 mm Hg
55.For a dilute solution, Raoult’s law states that :
1) The lowering of vapour pressure is equal to the mole fraction of the solute.
2) The relative lowering of vapour pressure is equal to the mole fraction of the
solute.
3) The relative lowering of vapour pressure is proportional to the amount of
the solute in solution.
4) The vapour pressure of the solution is equal to the mole fraction of the
solvent.
56.Benzene and naphthalene form ideal solution over the entire range of composition.
The vapour pressures of pure benzene and naphthalene at 300 K are 50.71
mmHg and 32.06 mmHg respectively. What will be the mole fraction of
benzene in vapour phase is 80 g of benzene is mixed with 100 g of naphthalene
?
1) 0.0675 2) 0.675 3) 0.35 4) 0.5
57.The vapour pressures of two liquids P and Q are 80 Torr and 60 Torr respectively.
The total vapour pressure of solution obtained by mixing 3 mol of P and 2 mol of
Q would be :
1) 72 Torr 2) 104 Torr 3) 68 Torr 4) 20 Torr
58.A solution has a 1:4 mol ratio of pentane to hexane. The vapour pressures of the
pure hydrocarbons at 200 C are 440 mm Hg for pentane and 120 mm Hg for
hexane. The mole fraction of pentane in the vapour phase would be :
1) 0.200 2) 0.549 3) 0.786 4) 0.478
59.A solution containing components A and B follows Raoult’s law :
1) A–B attraction force is greater than A–A and B–B.
2) A–B attraction force is less than A–A and B–B.
3) A–B attraction force remains the same as A–A and B–B.
4) Volume of solution is different from the sum of volume of the solute and the
solvent.
60.The vapour pressure of CCl4 at 250 C is 143 mmHg. If 0.5 g of a non-volatile solute
(molecular weight = 65) is dissolved in 100 mL CCl4 , the vapour pressure of
the solution will be :
1) 199.34 mmHg 2) 143.99 mmHg 3) 141.43 mm Hg 4) 135.22 mm Hg
61.The relative lowering of the vapour pressure is equal to the ratio between the
number of :
1) Solute molecules to the solvent molecules.
2) Solute molecules to the total molecules in the solution.
3) Solvent molecules to the total molecules in the solution.
4) Solvent molecules to the total number of ions of the solute.
62.Assertion (A) : The vapour pressure of a liquid is the equilibrium pressure of liquid-
vapour equilibrium at the given temperature.
Reason (R) : The ratio of the lowering of vapour pressure of a solvent upon
dissolution of a non-volatile solute, to the vapour pressure of pure solvent,
increases with temperature.
1) Both Assertion and Reason are true and Reason is correct explanation of
Assertion.
2) Both Assertion and Reason are true, but Reason is not the correct explanation
of Assertion.
3) Assertion is true, but Reason is false.
4) Assertion is false, but Reason is true.
63.Assertion (A) : Gases always tend to be less soluble in liquids as the temperature is
raised.
Reason (R) : Vapour pressure of liquids increases with increase in temperature.
1) Both Assertion and Reason are true and Reason is correct explanation of
Assertion.
2) Both Assertion and Reason are true, but Reason is not the correct explanation
of Assertion.
3) Assertion is true, but Reason is false.
4) Assertion is false, but Reason is true.
Ideal and non ideal solutions
64.On mixing 25mL of water with 25mL of ethyl alcohol, the total volume of solution
is
1) =50mL 2) > 50mL 3) < 50mL 4) Unpredictable
65.Statement - 1: A mixture of cyclohexane and ethanol shows positive deviation from
Raoult’s law.
Statement– 2: Cyclohexane reduces the intermolecular attractions between ethanol
molecules.
1) Statement – 1 is True, Statement – 2 is True; Statement – 2 is a correct
explanation for Statement – 1.
2) Statement – 1 is True, Statement – 2 is True; Statement – 2 is NOT a correct
explanation for Statement – 1.
3) Statement – 1 is True, Statement – 2 is False.
4) Statement – 1 is False, Statement – 2 is true
66.Each pair forms ideal solution except:
1) C2 H 5 Br and C2 H 5 I 2) C6 H5Cl and C6 H 5 Br
3) C6 H6 and C6 H 5CH 3 4) H 2O and C2 H5OH
67.Which one is not equal to zero for an ideal solution?
1) P = Pobs − PRaoult 2) H mix 3) Smix 4) Vmix
68.Which of the following is not correct for ideal solution ?
1) Raoult’s law is obeyed for entire concentration range and temperatures.
2) Smix = 0
3) Vmix = 0
4) H mix = 0
69.A non-ideal solution was prepared by mixing 30 mL chloroform and 50 mL acetone.
The volume of mixture will be :
1) >80 mL 2) <80 mL 3) = 80 mL 4)  80 mL
70.Which of the following is correct for a solution showing positive deviation from
Raoult’s law ?
1) Vmix  0, U mix  0, G mix  0 2) H mix  0, Smix = 0, G mix  0
3) Smix  0, Vmix  0, G mix  0 4) H mix  0, Smix  0, U mix = 0
71.Graph is obtained in the solution of :

1) H2O + HNO3 2) H 2 O + C 2 H 5OH

O
3) CHCl3 and || 4) n–Hexane and n–heptane
CH3 − C − CH3

72.In a mixture, A and B components show negative deviation as follows:

1) Vmix = + ve
2) H mix = − ve
3) A–B interaction is weaker than A–A and B–B interaction.
4) None of the above reasons is correct.
73.Which of the following liquid pairs shows a positive deviation from Raoult’s law ?
1) Water-Nitric acid 2) Benzene–methanol
3) Water-hydrochloric acid 4) Acetone–chloroform
74.All form ideal solution except :
1) C6 H6 and C 6 H 5 CH 3 2) C2 H5Br and C2H5I
3) C6H5Cl and C6 H5Br 4) C2H5I and C 2 H 5OH
75.The solution having lowest molar concentration is
1) 1.0N HCl 2) 0.4N H2SO4 3) 0.1N Na2CO3 4) 1N
76.Assertion (A) : The vapour pressure of 0.1 M sugar solution is more than
0.1 M KCl solution.
Reason (R) : Lowering of vapour pressure is directly proportional to the
number of species present in the solution.
1) Both Assertion and Reason are true and Reason is correct explanation of
Assertion.
2) Both Assertion and Reason are true, but Reason is not the correct explanation
of Assertion.
 3) Assertion is true, but Reason is false.
4) Assertion is false, but Reason is true.
77.Assertion (A) : If a liquid solute more volatile than the solvent is added to the
solvent, then the vapour pressure may increase, i.e. PS  P0 .
Reason (R) : In the presence of a more volatile liquid solute, only solute will
form the vapours and solvent will not.
1) Both Assertion and Reason are true and Reason is correct explanation of
Assertion.
2) Both Assertion and Reason are true, but Reason is not the correct explanation
of Assertion.
3) Assertion is true, but Reason is false.
4) Both Assertion and Reason are false.
78.A solute is added to a pure solvent. Identify the correct statements :
1) Vapour pressure of the solution becomes lower than that of the pure solvent.
2) Rate of evaporation of the pure solvent is reduced.
3) Solute does not affect the rate of condensation.
4) All are correct statements.
79.An azeotropic solution of two liquids has a boiling point lower than either of the
boiling points of the two liquids when it
1) Shows negative deviation 2) Shows positive deviation
3) Shows no deviation 4) Is unsaturated
80.The azeotropic solutions of two miscible liquids :
1) Can be separated by simple distillation.
2) May show positive or negative deviation from Raoult’s law.
3) Behave like a single component and boil at a constant temperature.
4) Both (2) and (3) are correct.
1. 1 21. 1 41. 2 61. 2
2. 3 22. 2 42. 2 62. 3
3. 3 23 4 43. 3 63. 2
4. 3 24. 3 44. 3 64. 2
5. 1 25. 3 45. 3 65. 1
6. 3 26. 2 46. 2 66. 4
7. 1 27. 1 47. 67. 3
8. 2 28. 1 48. 3 68. 2
9. 3 29. 2 49. 2 69. 2
10. 1 30. 2 50. 1 70. 1
11. 4 31. 3 51. 1 71. 2
12. 2 32. 1 52. 2 72. 2
13. 2 33. 4 53. 1 73. 2
14. 2 34. 1 54. 1 74. 4
15. 1 35. 1 55. 2 75. 3
16. 3 36. 3 56. 2 76. 1
17. 1 37. 3 57. 1 77. 4
18. 3 38. 1 58. 4 78. 4
19. 3 39. 2 59. 3 79. 2
20. 2 40. 3 60. 3 80. 4