Entry Test Preparation 2015
Chemistry
CHAPTER NO 9
SOLUTIONS
1. The molarity of solution containing
1.5g urea dissolved in 100 cm3 of the solution is.
(a)
1 molar (b)
0.1 molar (c) 0.2 molar (d) 0.25 molar
2. The molarity of glucose solution is 0.02, the mass of
glucose in 50 cm3 of the solution is.
(a)
1.8g (b) 0.18g (c) 2.18g (d) 18g
3. The molarity of solution containing 103g (NH4)2SO4
in 600 cm3 of the solution.
(a)
1.32 (b) 1.45 (c) 1.62 (d) 1.65
4. K2CO3 is
dissolved in water, the solution is 0,1 molar. The mass of the it in 250 cm of
solution is.
(a)
2gm (b) 3gm (c) 3.45gm (d) 4 gm
5. The molarity of toluene solution in
benzene is 0.22 if 5 g of toluene is dissolved, then the mass of benzene in
grams.
(a) 267 (b) 260 (c)
240 (d) 247
6. 0.1 molar glucose solution has % W/ V
(a) 1.8% (b) 18% (c)
2.8% (d) 2.8%
7. 10% aqueous solution of NaCl has
molarity.
(a) 1.7 M (b) 2.7M (c)
0.17M (d) 3.7M
8. 50 cm3 of 0.05 molar urea
solution has % W/V concentration.
(a) 6% (b) 18% (c)
0.18% (d) 2.8%
9. Which one of the following solution
will have higher vapour pressure than that of water.
(a) Aqueous solution of Methanol (b) Aqueous solution of HCl
(c) Aqueous solution of glucose (d) Aqueous solution of urea
10. Which one of the following is used as
antifreeze in the radiator.
(a) Methanol (b) Ethanol (c)
Ethylene glycol (d) Glycerin
11. Which of the following salts mixed with
ice to make the freezing mixture used in the ice-cream machine.
(a) KNO3 (b) NH4NO3 (c) AgNO3 (d) Mg(NO3)2
12. The order of salvation i.e. hydration
energy of LiCl, MgCl2, CuCl2 and NH4Cl is.
(a) LiCl>MgCl2>CuCl2>NH4Cl (b) NH4Cl>CuCl2>LiCl>MgCl2
(c) CuCl2>NH4Cl>MgCl2>LiCl (d) MgCl2>CuCl2>LiCl>NH4Cl
13. Which one of the following aqueous
solution is acidic.
(a) CH3COONa (b) NaCl (c) AlCl3 (d) Na2CO3
14. Which one of the following aqueous
solution is basic.
(a) NaCl (b) NaNO3 (c) AlCl3 (d) Na2CO3
15. 12g urea or 36 g glucose when dissolved
in 1000g water increase the boiling point of water to 100.104oC. for
an identical solution the amount of sucrose required is.
(a) 34.2g (b) 68.4g (c)
342g (d) 3.42
16. 1 Kg of sea water contains 4.96 x 10-3
g of dissolved oxygen. The concentration of oxygen in sea water in parts per
million is:
(a) 4.96 x 10-2 (b) 0.496 (c) 4.96 (d)
49.6
17. 36% W/V solution of HCl has the molarity.
(a) 1.0 (b) 1.15 (c)
0.98 (d) 1.98
18. The freezing mixture used in ice cream
machine consist of ice and
(a) KNO3 (b) KCl (c) MgCl2 (d) NaNO3
19. 17.1 g sucrose dissolved in 250 cm3
of solution. This has % W/V and molarity.
(a) 10%, 0.1 M (b) 6.84%, 0.2 M (c) 1%, 0.01 M (d) 4.84%, 0.1 M
20. 5% (W/W) aqueous sugar solution has its
molarity.
(a) 0.15 (b) 0.05 (c)
0.2 (d) 0.25
21. 10% (W/W) aqueous NaCl solution has its%
(W/V)
(a) 10% (b) 11% (c)
11.11% (d) 10.11%
22. 10 g naphthalene is dissolved in 200 g
benzene, then molarity of solution is.
(a) 0.5 (b) 0.05 (c)
0.29 (d) 0.39
23. A Solution consisting of 92 g ethyl
alcohol (C2II5OII) 96 g methyl alcohol (CH3OH)
90 g water the mole fraction and mole percent of methyl alcohol is.
(a) 0.3, 30% (b) 0.2, 30% (c)
0.5, 30% (d) 0.2, 20%
24. A solution containing 5,8 g acetone, 4.6
g ethyl alcohol and 12 g chloroform has mole fraction and mole percent of
acetone.
(a) 0.11, 10% (b) 0.33, 33% (c) 0.22,22% (d) 0.11, 33%
25. The number of moles of NH4Cl
dissolved in 500 cm3 of its 15% W/V solution is.
(a) 1 mole (b) 1.4 moles (c)
2.0 moles (d) 2.4 moles
26. Silver amalgam is a solution consisting
of the type.
(a) Liquid is solute and solvent is
solid. (b) Liquid is solute, liquid
is solvent
(c) Solid is solute and solid is the
solvent (d) Gas is solute and solid is
solvent
27. Ethylene glycol is mixed with water as
antifreeze in radiator because.
(a) It has low vapour pressure (b) It lower the freezing
point of water
(c) It raises the boiling point of
water (d) It has all the above
characters.
28. Which of the following solutions will
have different composition of liquid and vapour phases at their boiling points.
(a) Ethanol + Water (b0
Benzene + Toluene
(c) Acetone + Chloroform (d) Water + HCl
29. Aqueous solution of methanol is zeotropic
mixture because.
(a) It does not obey Rault’s law.
(b) Mixture
cannot be separated by fractional distillation
(c) Solution of
non-volatile, strong electrolyte
(d) Mixture can
be separated by fractional distillation
30. Which of the following half molar solutions will have lowest
freezing point.
(a)
Solution of non-volatile, non electrolyte
(b)
Solution of non-volatile, weak electrolyte.
(c)
Solution of non-volatile, strong electrolyte.
(d)
Solution of volatile, non-electrolyte
31. A solution of 0.5 mole camphor in 100 g
chloroform (Kb = 0.322) has rise in boiling point than that of chloroform.
(a) 0.81oC (b) 1.61oC (c)
1.81oC (d)
0.61oC
32. Dust particles in smoke is a solution of
type.
(a) Liquid is solute and solid is
solvent. (b) Solid is solute and
liquid is solvent.
(c) Solid is solute and gas is
solvent. (d) Gas is solute and
solid is solvent
33. Which of the following is a solution of
solid is solute and solid is the solvent.
(a) Butter (b) Mercury in silver (c) Smoke (d)
Steel
34. Which of the following is not an example
of the solution of liquid is solute and gas is the solvent.
(a) Aerated water (b) Clouds (c) Fog (d)
Liquid air pollutant s
35. Cane sugar is not soluble in benzene but
soluble in water because.
(a) Cane sugar is a macro molecule (b) Cane sugar is an ionic
compound
(c) Cane sugar has hydrogen bonding (d) Cane sugar is an organic molecule
36. Which one of the following is not soluble
in acetone.
(a) NaCl (b) Urea (c)
Cane Sugar (d) Alcohol
37. When equal volumes of ether and water are
shaken, then two layers are formed, the ether’ layer contains water.
(a) 2.1% (b) 1.2% (c)
5.6% (d) 6.5%
38. When equal volumes of phenol and water
are mixed together at 25oC, the upper layer has the phenol water
percentage.
(a) 5% phenol + 95% water (b) 10% phenol + 90%
water
(c) 15% phenol + 85 water (d) 8.5 phenol +
66% water
39. The critical solution temperature of
phenol in water solution is 65.9 oC. At this temperature the phenol
water percentage is.
(a) 50% phenol + 50% water (b) 66% phenol + 34%
water
(c) 30% phenol + 70% water (d) 34% phenol + 66%
water
40. Vapour pressure of pure water is 28.4
torr. Cane sugar is dissolved in it which lowers the vapour pressure of
solution to 25 torr. The mole fraction of cane sugar is.
(a) 0.48 (b) 0.24 (c)
0.12 (d) 0.02
41. Vapour pressure of pure water is 35 torr.
30g urea is dissolved in 81 g water. The vapour pressure of solution becomes.
(a) 30 torr (b) 31.5 torr (c)
31 torr (d) 30.5 torr
42. Which one has the highest heat of
hydration
(a)Li+2 (b)Ag+ (c)Mg+2 (d)Cu+2
43. Which one of the following is an ideal solution
obeys Rault’s law.
(a) Ethanol + water (b)
Benzene + Toluene
(c) HCl+ Water (d)
Acetone + Chloroform
44. Which one of the following is non-ideal
solution.
(a)Methanol + CCl4 (b)
Benzene + Toluene
(c) HCl + water (d)
Acetone + Chloroform
45. Which one of the following mixtures shows
positive deviation from Rault’s law and forms an Azeotrope with minimum boiling
point.
(a) Ethanol + H2O (b)
Methanol + Acetone
(c) Ether + HCl (d)
Acetone + Chloroform
46. Which one of the following mixture
exhibits negative deviations from Rault’s law and is an azeotropic mixture with
maximum boiling point.
(a) Acetone + CS2 (b)
Methonal + Benzene
(c) Ethanol +
Benzene (d)
Water + HCl
47. Which statement is incorrect for an ideal solution.
(a)
The forces of attractions between solute and solvent molecules are same.
(b)
There is no evolution or absorption of heat i.e. AH = 0 on mixing components.
(c)
Volume of the solution is less than sum of volumes of individual components.
(d)
Vapour pressure of solution is directly proportional to the mole fraction of
solvent
48. Which one of the following is not a conjugate solution.
(a)
Ether + Water (b) Phenol + Water (c) Nicotine + Water (d) Ethanol + Water
49. The volume of the solution is slightly
greater than the sum of individual volumes of the components then this solution
is.
(a) An azeotropic mixture showing
negative deviation from Rault’s law.
(b) An azeotropic mixture showing
positive deviation from Rault’s law.
(c) Ideal solution that obeys
Rault’s law.
(d) Super Saturated solution.
50. The vapour pressure of a pure liquid is 60 torr. At 25oC.
The vapour pressure of solution if 3 moles of this substance are mixed with 2
moles of a non-volatile non-electrolyte is.
(a) 48 torr (b) 40 torr (c)
36 torr (d) 30 torr
ANSWERS
(solutions)
1
|
B
|
2
|
C
|
3
|
C
|
4
|
B
|
5
|
A
|
6
|
A
|
7
|
D
|
8
|
B
|
9
|
C
|
10
|
C
|
11
|
B
|
12
|
A
|
13
|
D
|
14
|
A
|
15
|
D
|
16
|
B
|
17
|
A
|
18
|
A
|
19
|
C
|
20
|
D
|
21
|
A
|
22
|
B
|
23
|
C
|
24
|
B
|
25
|
A
|
26
|
D
|
27
|
D
|
28
|
A
|
29
|
D
|
30
|
A
|
31
|
A
|
32
|
C
|
33
|
B
|
34
|
C
|
35
|
B
|
36
|
A
|
37
|
A
|
38
|
B
|
39
|
A
|
40
|
C
|
41
|
B
|
42
|
B
|
43
|
C
|
44
|
A
|
45
|
C
|
46
|
B
|
47
|
B
|
48
|
C
|
49
|
D
|
50
|
D
|
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