1. AMU PAST PAPERSCHEMISTRY- 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 iscorrect. Indicate you choice of the correct answer for each part in your answer-book bywriting 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. Stevensons scale b. Mullikens scale c. Allred-Rochows 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 Fools 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. Flemings test b. Beilstein test c. Bayers test d. Fehlings 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 andG b.H andS c.G andS 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 Waals forces d. None of the above 24. 22 Problem Fuming sulphuric acid is commercially known as : a. Oleum b. Sulphurous acid c. Marshalls acid d. Caros 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 Tollens 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 Meyers test c. Fehlings solution test d. Hofmanns 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 Ka1 b. log Ka1 c. log Ka 1 d. - logKa 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 Gibbs Helmholtz equation is : a. G= H+TS 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 Crafts reaction b. Cannizzaros reaction c. Kolbes 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. 2.303REa b. RR 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 53. FOR SOLUTIONS VISIT WWW.VASISTA.NET