This document contains an unsolved chemistry exam from 2006 consisting of 59 multiple choice questions testing concepts related to general chemistry, organic chemistry, and inorganic chemistry. The questions cover topics such as chemical bonding, stoichiometry, thermodynamics, reaction mechanisms, and properties of common substances and elements.

1. UPSEE–PAST PAPER
CHEMISTRY- UNSOLVED PAPER - 2006

2. SECTION – I
 Single Correct Answer Type
 There are five parts in this question. Four choices are given for each part and one of them is
correct. Indicate you choice of the correct answer for each part in your answer-book by
writing the letter (a), (b), (c) or (d) whichever is appropriate

3. 01 Problem
Bakelite is obtained from phenol by reacting with :
a. Acetaldehyde
b. Acetal
c. Formaldehyde
d. Chlorobenzene

4. 02 Problem
The molecule which does not exhibit dipole moment is :
a. NH3
b. CHCl3
c. H2O
d. CCl4

5. 03 Problem
What is the half-life of 6C14, if its disintegration constant is 2.31 x 10-4 year-1 ?
a. 0.3 x 104 year
b. 0.3 x 103 year
c. 0.3 x 108 year
d. 0.3 x 102 year

6. 04 Problem
One mole of CO2 contains :
a. 3 g atoms of CO2
b. 18.1 x 1023 molecules of CO2
c. 6.02 x 1023 atoms of O
d. 6.02 x 1023 atoms of C

7. 05 Problem
Which of the following is isoelectronic with CO2 ?
a. NO2
b. NO
c. N2O
d. N2O4

8. 06 Problem
All bond angles are exactly equal to 1090 28’ in :
a. Methyl chloride
b. Iodoform
c. Chlorofom
d. Carbon tetrachloride

9. 07 Problem
The heats of combustion of carbon monoxide at constant pressure and at
constant volume at 270C will differ from one another by :
a. 27 cal
b. 54 cal
c. 300 cal
d. 600 cal

10. 08 Problem
For the reaction the change of enthalpy at 270C is 19 kcal. The value of E
is :
a. 21.2 kcal
b. 17.8 kcal
c. 18.4 kcal
d. 20.6 kcal

11. 09 Problem

In acidic medium MnO is converted to Mn2+, The quantity of electricity in faraday
required to reduce 0.5 mole of MnO to Mn2+ would be :
a. 2.5
b. 5
c. 1
d. 0.5

12. 10 Problem
During electrolysis of water the volume of O2 liberated is 2.24 dm3. The volume of
hydrogen liberated, under same conditions will be :
a. 2.24 dm3
b. 1.2 dm3
c. 4.48 dm3
d. 0.56 dm3

13. 11 Problem
Calculate the total pressure in a 10.0L cylinder which contains 0.4 g helium, 1.6 g
oxygen and 1.4 g nitrogen at 270C
a. 0.492 atm
b. 49.2 atm
c. 4.92 atm
d. 0.0492 atm

14. 12 Problem
If the energy difference between the ground state of an atom and its exited state
is 4.4 x 10-4 J, the wavelength of photon required to produce the transition :
a. 2.26 x 10-12 m
b. 1.13 x 10-12 m
c. 4.52 x 10-16 m
d. 4.52 x 10-12 m

15. 13 Problem
The activity of a radioactive substance falls to 87.5% of the initial value is 5 years.
What is the half-life of the element ?
a. 52 years
b. 104 years
c. 26 years
d. 13 years

16. 14 Problem
Metals are good conductors of electricity because they contain :
a. Ionic bonds
b. A network structure
c. Very few valence electrons
d. Free electrons

17. 15 Problem
The oxidation states of iodine in HIO4,H3IO5 and H5IO6 are respectively :
a. + 1, + 3, + 7
b. + 7, + 7, + 3
c. + 7, + 7, + 7
d. + 7, + 5, + 3

18. 16 Problem
Crystalline form of silica is called :
a. Crystalline silicon
b. quartz
c. rock
d. talc

19. 17 Problem
The elements commonly used for making transistors are :
a. C and Si
b. Ga and In
c. P and As
d. Si and Ge

20. 18 Problem
Ethyl alcohol is used as a preservative for chloroform because it :
a. Prevents aerial oxidation of chloroform
b. Prevents decomposition of chloroform
c. Decomposes phosgene to CO and Cl2
d. Removes phosgene by converting it to ethyl carbonate

21. 19 Problem
In the following sequence of reactions C2H5Br is : AgCN
X Re duction
Y ;Y
a. n-propyl amine
b. isopropylamine
c. ethylamine
d. ethylmethyl amine

22. 20 Problem
Alcoholic beverages contain :
a. Isopropyl
b. Alcohol
c. n-propyl alcohol
d. methyl alcohol

23. 21 Problem
K2Cr2O7
In the reaction A H2 SO4
acetone oxidation acetic acid, A is :
a. 1-propanol
b. 2-butanol
c. 2-propanol
d. ethanol

24. 22 Problem
The enzymes which are used to convert starch into ethyl alcohol are :
a. Maltase, diastase
b. Diastase, maltase, zymase
c. Ivertase, zymase
d. Invertase, diastase, maltase

25. 23 Problem
Picric acid is :
a. 2, 4, 6-tribromophenol
b. sym-trinitrophenol
c. trinitrophenol
d. 2, 4, 6-trinitrotoluene

26. 24 Problem
2-pentanone and 3-pentanone can be distinguished by :
a. Cannizaro’s reaction
b. Aldol condensation
c. Iodoform reaction
d. Clemmensen’s reduction

27. 25 Problem
The acid which contains the aldehyde group is :
a. Acetic acid
b. Formic acid
c. Benzoic acid
d. Proprionic acid

28. 26 Problem
Sour taste of lemon is due to the presence of :
a. Citric acid
b. Acetic acid
c. Oxalic acid
d. None of these

29. 27 Problem
Vinegar is a solution of acetic acid which is :
a. 15-20%
b. 20- 25%
c. 6-8%
d. 2-4%

30. 28 Problem
Calcium formate on distillation gives :
a. HCOOH
b. CH3COOH
c. CH3CHO
d. HCHO

31. 29 Problem
oxidation NH3
In the reaction : CH3OH A B ; A and B are :
a. HCHO, HCOONH4
b. HCCOH, HCOONH4
c. HCOOH, HCONH2
d. HCHO,HCONH2

32. 30 Problem
The cleavage of an aryl-alkyl ether with cold HI gives :
a. Alkyl iodide and water
b. Aryl iodide and water
c. Alkyl iodide, aryl iodide and water
d. Phenol and alkyl iodide

33. 31 Problem
The number of and bonds in a molecule of acetonitrile are respectively :
a. 2, 5
b. 3, 4
c. 4, 3
d. 5, 2

34. 32 Problem
Proteins are :
a. Polypeptides with low molecular weights
b. Polypeptides with high molecular weights
c. Polymers of amides
d. Polymers of secondary amines

35. 33 Problem
Glucose is a/an :
a. Polyhydroxy ketone
b. Alcohol
c. Hydrate of carbon
d. Pentarhydroxy aldehyde

36. 34 Problem
Which one of the following, is on ester ?
a. Coconout oil
b. Kerosene oil
c. Soap
d. Teflon

37. 35 Problem
Among the following a natural polymer is
a. Cellulose
b. PVC
c. Polyethylene
d. Teflon

38. 36 Problem
The mass of 1 mole of electrons is
a. 9.1 X 10-28 g
b. 1.008 mg
c. 0.55 mg
d. 9.1 X 10-27g

39. 37 Problem
The bond order of N2+ is
a. 1.5
b. 3.0
c. 2.5
d. 2.0

40. 38 Problem
An aqueous solution of glucose is 20% in strength. The volume in which 1 g mole
of it is dissolved will be
a. 9L
b. 1.8L
c. 8L
d. 0.9L

41. 39 Problem
Green vitriol is
a. FeSO4. 7H2O
b. ZnSO4. 7H2O
c. CuSO4. 5H2O
1
d. CaSO4. 2 H2O

42. 40 Problem
Amphoteric-oxide combinations are in :
a. ZnO, K2O, SO3-
b. ZnO, P2O5, Cl2O7
c. SnO2, Al2O3, ZnO
d. PbO2, SnO2, SO3

43. 41 Problem
The element having highest electron affinity is :
a. Bromine
b. Iodine
c. Fluorine
d. Chlorine

44. 42 Problem
The correct order according to size is :
a. O > O- > O2-
b. O- > O2- > O
c. O2- > O- > O
d. O > O2- > O-

45. 43 Problem
Diagonal relationship is for
a. Li – Na
b. Be – Mg
c. Si – C
d. B – Si

46. 44 Problem
Mixture of MgCl2 and MgO is called :
a. Portland cement
b. Sorrel’s cement
c. Double salt
d. None of these

47. 45 Problem
Baking powder contains :
a. NaHCO3, Ca(H2PO2)2 and starch
b. NaHCO3, Ca(H2PO2)2
c. NaHCO3, starch
d. NaHCO3,

48. 46 Problem
Estimation of calcium and magnesium is done by :
a. EDTA
b. Oxalate
c. Phosphate
d. None of these

49. 47 Problem
Buckminster fullerene is :
a. Pure graphite
b. C-60
c. Diamond
d. C- 90

50. 48 Problem
Pb reacts with dilute HNO3 produces :
a. NO
b. NH4NO3
c. N2O5
d. NO2

51. 49 Problem
End-product of the hydrolysis of XeF6 is :
a. XeF4O
b. XeF2O2
c. XeO3
d. XeO 3

52. 50 Problem
Dry ice is :
a. Solid SO2
b. Solid NH3
c. Solid O2
d. Solid CO2

53. 51 Problem
For advertisement, the coloured discharged tubes contain :
a. He
b. Ne
c. Ar
d. Kr

54. 52 Problem
The deficiency of iodine in diet causes :
a. Rickets
b. Nightblindness
c. Beri-beri
d. Goiter

55. 53 Problem
Bronze is a mixture of :
a. Pb + Sn
b. Cu + Sn
c. Cu + Zn
d. Pb + Zn

56. 54 Problem
The process of zinc-plating on iron sheet is known as :
a. Annealing
b. roasting
c. galvanization
d. smelting

57. 55 Problem
Vitamin B12 contains :
a. Co
b. Mn
c. Mg
d. Fe

58. 56 Problem
Philosopher’s wool on heating with BaO at 11000C produce :
a. Ba + ZnCl2
b. BaCdO2
c. BaZnO2
d. BaO2 + Zn

59. 57 Problem
Following method is not used for extraction of Al :
a. van Arkel
b. Serpeck
c. Baeyer
d. Hall-Heroult

60. 58 Problem
In electrorefining of copper, some gold is deposited as :
a. Cathode
b. Electrode
c. Cathode mud
d. Anode mud

61. 59 Problem
The pH value of 1/1000 N-KOH solution is :
a. 3
b. 10-11
c. 2
d. 11

62. 60 Problem
Geometrical isomers can exist for :
a. CH3CH(CH3)CH2CH2CH3
b. CH3CH = CH . CH3
c. CH3CH = CH2
d. ClH2C – CH2Cl

63. 61 Problem
Size of colloidal particles is in the range :
a. 0.05 mµ - 0.1 m µ
b. 25µ - 30 µ
c. 0.1 µ - 1 m µ
d. 10 µ-20 µ

64. 62 Problem
Osmotic pressure of 0.4% urea solution is 1.64 atm. And that of 3.42% can sugar
is 2.46 atm. When the above two solutions are mixed, the osmotic pressure of
the resulting solution is :
a. 0.82 atm
b. 2.46 atm
c. 1.64 atm
d. 4.10 atm

65. 63 Problem
LPG mainly contains :
a. Ethyne
b. Butane
c. Methane
d. Ethane

66. 64 Problem
Which of the following metal ions is not coloured ?
a. Ti3+
b. Fe3+
c. V2+
d. Zn2+

67. 65 Problem
Volume of water needed to mix with 10 mL NHCl to get 0.1 N HCl is :
a. 900 mL
b. 9 mL
c. 90 mL
d. 100 mL

68. 66 Problem
Heavy water is :
a. Water containing Fe, Cr, Mn
b. Water at 00C
c. D2O
d. Water obtained after distillation

69. 67 Problem
Two moles of PCl5 were heated in a closed vessel of 2 L. AT equilibrium 40% of
PCl5 is dissociated into PCl5 and Cl2. The value of equilibrium constant is :
a. 0.53
b. 0.267
c. 2.63
d. 5.3

70. 68 Problem
Equal moles of water and urea are taken in a flask. What is mass percentage of
urea in the solution ?
a. 23.077%
b. 230.77%
c. 2.3077%
d. 0.23077%

71. 69 Problem
The radiant energy from the sun is due to :
a. Combustion
b. Nuclear fusion
c. Nuclear fission
d. Chemical reaction

72. 70 Problem
The IUPAC name of K2 [PtCl6] is :
a. Hexachloroplatinate potassium
b. Potassium hexachloroplatinate (IV)
c. Potassium hexachloroplatinate
d. Potassium hexachloroplatinum (IV)

73. 71 Problem
The solubility of CaF2 in pure water is 2.3 x 10-6 mol dm-3. Its solubility product
will be :
a. 4.8 x 10-18
b. 48.66 x 10-18
c. 4.9 x 10-11
d. 48.66 x 10-15

74. 72 Problem
HNO2
In the reaction RNH2 A B C ; C is :
a. NH3
b. N2
c. O2
d. CO2

75. 73 Problem
In an isochoric process, H for a system is equal to :
a. P . ∆V
b. PV
c. E + P . ∆ V
d. E

76. 74 Problem
The value of the ionic product of water depends :
a. On volume of water
b. On temperature
c. Changes by adding acid or alkali
d. Always remain constant

77. 75 Problem
Fluorine exhibits an oxidation state of only-1because :
a. It can readily accept an electron
b. It is very strongly electronegative
c. It is a non-metal
d. It belongs to halogen family

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