1. AMU –PAST PAPERS
CHEMISTRY- UNSOLVED PAPER – 2003

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
Electron behaves both as a particle and a wave. This was proposed by :
a. Heisenberg
b. Gilbert N. Lewis
c. De-Broglie
d. L. Rutherford

4. 02 Problem
The correct order of increasing atomic radii, is :
a. B < Al < Ga
b. Ga < Al < B
c. Al < B < Ga
d. B < Ga < Al

5. 03 Problem
Which is not a scale of measuring electronegativity ?
a. Stevenson’s scale
b. Mulliken’s scale
c. Allred-Rochow’s scale
d. Pauling scale

6. 04 Problem
The addition of HCN on ketones, is an example of :
a. Nucleophilic addition
b. Electrophilic addition
c. Free radical addition
d. None of the above

7. 05 Problem
Fool’s gold is :
a. CuFeS2
b. FeS2
c. CuS2
d. Cu-2SO

8. 06 Problem
Weight of an atom of an element is 6.644 x 10-23g. What will be the number of g
atom of that element in 40 kg ?
a. 10-3
b. 106
c. 103
d. none of these

9. 07 Problem
If two moles of an ideal gas at 546K occupy volume 44.8 litre, then pressure must
be :
a. 2 atm.
b. 3 atm
c. 4 atm
d. 1 atm.

10. 08 Problem
Compressibility factor of an ideal gas is :
a. Equal to 2
b. Equal to 1
c. Greater than 1
d. Always less than 1

11. 09 Problem
When ammonium chloride is heated with NaOH, a gas is evolved, which has :
a. Pungent odour
b. Smell of rotten eggs
c. Smell of ammonia
d. No smell

12. 10 Problem
When ammonium nitrate is heated at 2500C, the gas evolved is :
a. N2
b. NH3
c. N2O3
d. N2O

13. 11 Problem
The optical isomers, which are not enantiomers, are called :
a. Conformer
b. Diastereomer
c. Mirror images
d. None of these

14. 12 Problem
When methyl iodide is treated with sodium in thereal solution, it gives :
a. Methane
b. Ethane
c. Methyl sodium iodide
d. Sodium methoxide

15. 13 Problem
Bi210 has a half-life of 5 days. The time taken, for of a sample to decay, is :
a. 15 days
b. 20 days
c. 10 days
d. 3.4 days

16. 14 Problem
In permonosulphuric acid (H2SO5), the oxidation number of sulphur is :
a. +8
b. +4
c. +5
d. +6

17. 15 Problem
Qualitative test of halogens in an organic compound is made by :
a. Fleming’s test
b. Beilstein test
c. Bayer’s test
d. Fehling’s test

18. 16 Problem
Brown ring test is for :
a. Nitrate
b. Sulphate
c. Chloride
d. Sulphide

19. 17 Problem
Which of the following compound would exhibit co-ordination isomerism ?
a. [Cr(en)2]NO2
b. [Cr(H2O)6]Cl3
c. [Cr(NH3)6][Co(CN)6]
d. none of these

20. 18 Problem
Which of the following quantities are equal at equilibrium under the particular
set of conditions ?
a. H and G
b. H and S
c. G and S
d. None of these

21. 19 Problem
For the transformation 7N14 + ….. 6C14 + 1H1 the bombarding particle is :
a. Proton
b. Neutron
c. Deutron
d. Electron

22. 20 Problem
The precipitate of Fe(OH)3 in presence of water containing some FeCl3
becomes colloidal on gentle shaking. This is an example of :
a. Electro-osomosis
b. Coagulation
c. Peptisation
d. Electrophoresis

23. 21 Problem
Phosphoric acid is syrupy in nature due to :
a. Strong covalent bonding
b. Hydrogen bonding
c. Van der Waal’s forces
d. None of the above

24. 22 Problem
Fuming sulphuric acid is commercially known as :
a. Oleum
b. Sulphurous acid
c. Marshall’s acid
d. Caro’s acid

25. 23 Problem
Benzaldehyde condense with acetaldehyde to produce :
a. Cinnamic acid
b. Benzoic acid
c. Cinnamaldehyde
d. Acetic anhydride

26. 24 Problem
The reaction of acetaldehyde with Tollen’s reagent gives :
a. Silver acetate
b. Methyl alcohol
c. Formaldehyde
d. Acetic acid

27. 25 Problem
In the series, ethane, ethane and ethyne, the C- H bond energy is :
a. Same in the all three compounds greatest in ethane
b. Greatest in ethane
c. Greatest in ethane
d. Greatest in ethyne

28. 26 Problem
Primary, secondary and tertiary alcohols can be distinguished by performing :
a. Beilstein test
b. Victor Meyer’s test
c. Fehling’s solution test
d. Hofmann’s test

29. 27 Problem
What is obtained, when ammonical AgNO3 reacts with acetylene ?
a. Propanone
b. Silver acetylide
c. Ethylene
d. None of these

30. 28 Problem
Which of the following is a colligative property ?
a. Osmotic pressure
b. Surface tension
c. Viscosity
d. Optical rotation

31. 29 Problem
Which of the following solution has highest boiling point ?
a. 0.1 M urea
b. 0.1 M sucrose
c. 0.1 M NaNO3
d. 0.1 M Al(NO3)3

32. 30 Problem
The order of a reaction, with respect to one of the reacting component Y, is zero
It implies that :
a. The reaction is going on at a constant rate
b. The rate of reaction does not vary with temperature
c. The reaction rate is independent of the concentration of Y
d. The rate of formation of the activated compelx is zero

33. 31 Problem
The hybridization of P in PCl5 is :
a. sp2
b. sp3d
c. sp3
d. dsp2

34. 32 Problem
Red lead is an example of :
a. Basic oxide
b. Super oxide
c. Mixed oxide
d. Amphoteric

35. 33 Problem
The solubility product of PbCl2 is 2.3 x 10-32. Its solubility will be :
a. 1.78 x 10-11 g/lit
b. 2.95 x 10-11 g/lit
c. 3.42 x 10-11 g/lit
d. 4.95 x 10-11 g/lit

36. 34 Problem
pKa of a weak acid is defined as :
a. log Ka
1
b. log Ka
1
c. log K
a
1
d. - log Ka

37. 35 Problem
At 300 K, the equilibrium partial pressure of CO2, CO and O2 are 0.6, 0.4 and 0.2
atmospheres respectively. Kp for the reaction, 2CO2  2CO O2 is :
a. 0.088
b. 0.0533
c. 0.133
d. 0.177

38. 36 Problem
If the rate of a gaseous reaction is independent of pressure, the order of reaction
is :
a. 0
b. 1
c. 2
d. 3

39. 37 Problem
The correct representation of Gibb’s Helmholtz equation is :
a. G= H+T S
b. G= H- T .S
c. G= H - T. S
d. G= H + S. T

40. 38 Problem
Benzyl alcohol can be prepared from benzaldehyde by :
a. Friedel Craft’s reaction
b. Cannizzaro’s reaction
c. Kolbe’s reaction
d. Reimer Tiemann reaction

41. 39 Problem
The relationship between acetylene and benzene is comparable to the
relationship between propyne and :
a. Dimethyl benzene
b. Neoprene
c. Propyl benzene
d. Mesitylene

42. 40 Problem
Which of the following is not inflammable ?
a. CHCl3
b. Benzene
c. Toluene
d. Carbon tetrachloride

43. 41 Problem
Which of the following is an acidic oxide ?
a. Mn2O3
b. MnO2
c. Mn2O7
d. MnO

44. 42 Problem
The most reactive noble gas is :
a. Helium
b. Argon
c. Krypton
d. Xenon

45. 43 Problem
The movement of the colloidal particles under the influence of applied electric
field is called :
a. Dialysis
b. Electrophoresis
c. Tyndall effect
d. Osmosis

46. 44 Problem
The slope in Arhenius plot, is equal to :
Ea
a. 2.303R
Ea
b. R
R
c. 2.303Ea
d. none of these

47. 45 Problem
Carnallite is :
a. MgCO3.CaCO3
b. MgSO4. 7H2O
c. KAlSi3O8
d. KCl.MgCl2.6H2O

48. 46 Problem
Which of the following ions, is colourless ?
a. Fe3+
b. Zn2+
c. Fe2+
d. Cu2+

49. 47 Problem
Paracetamol is :
a. An antipyretic
b. An antiseptic
c. An natibiotic
d. A disinfectent

50. 48 Problem
Natural rubber is the polymer of :
a. 1, 2-butadiene
b. 1,3-butadiene
c. isoprene
d. none of these

51. 49 Problem
Which of the following is an intensive property ?
a. Volume
b. Enthalpy
c. Surface tension
d. Free energy

52. 50 Problem
Which of the following metal can replace zinc from ZnSO4 solution ?
a. Cu
b. Hg
c. Fe
d. Al

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