AMU - Chemistry - 2007

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AMU - Chemistry - 2007

  1. 1. AMU –PAST PAPERSCHEMISTRY- UNSOLVED PAPER - 2007
  2. 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. 3. 01 Problem Sn4+ + 3e- Sn2+ Eo = 0.13V Br2 + 2e- 2Br- Eo = 1.08 V Calculate Kep for the cell reaction for the cell formed by two electrodes 1041 1032 10-32 10-42
  4. 4. 02 Problem Consider the reaction Give the equilibrium constant for the formation of N2O4 from N2 and O2 1 1 a. 2 K1 K2 1 b. K1K2 1 c. K1K2 K2 d. K1
  5. 5. 03 Problem Half-life of radioactive element is 16 h. What time it will take for 75% disintegration ? a. 32 days b. 32 h c. 48 h d. 16 h
  6. 6. 04 Problem Friedel – Craft acylation can be given by a. b. c. d. R–O-R
  7. 7. 05 Problem Which of the following is having maximum acidic strength ? a. b. c. d.
  8. 8. 06 Problem For the reaction Na2CO3 + 2HCl NaCl + H2O + CO2 Equivalent weight of Na2CO3 is : a. M/2 b. M c. 2M d. M/4
  9. 9. 07 Problem Excited state configuration of Mn2+ is 4 a. t2 g 3 2 b. t2g eg 4 2 c. t2g eg 5 0 d. t2g eg
  10. 10. 08 Problem Which of the following is thermosetting polymer ? a. Nylon-6 b. Bakelite c. Nylon-66 d. SBR
  11. 11. 09 Problem AgNO3 X HNO3 Yellow or white ppt. Which of the following cannot be X ? a. b. (CH3) CHCl c. d.
  12. 12. 10 Problem Rate of a reaction can be expressed by following rate expression Rate=k[A]2 [B], if concentration of A is increased by 3 times, and concentration of B increased by 2 times, how many times rate of reaction increases? a. 9 times b. 27 times c. 18 times d. 8 times
  13. 13. 11 Problem What is the reason for unusual high b.p of water? a. Due to the presence H+ and OH- ions in water b. Due to dipole-dipole interactions c. Due to London forces d. Strong London forces
  14. 14. 12 Problem Shine at freshly cut sodium is because of a. Due to oscillation of free electrons b. Due to weak metallic bonding c. Due to by absorption of light in crystal lattice d. Due to pressure of free valency at the surface
  15. 15. 13 Problem Most acidic oxide among the following is a. Cl2O5 b. Cl2O c. Cl2O3 d. Cl2O7
  16. 16. 14 Problem . a. b. c. d.
  17. 17. 15 Problem Which of the following statements is wrong? a. Metals are more then non metals b. There are only few metalloids c. Hydrogen can be placed with alkali metals as well as with halogen in periodic table d. Non metals are more than metals
  18. 18. 16 Problem What volume of M/10 NaOH added in 50 mL, M/10 acetic solution to get a buffer solution having highest buffer capacity? a. 50mL b. 25mL: c. 10mL d. 40mL
  19. 19. 17 Problem Monomers of nucleic acid is a. Nucleotides b. Nucleoxides c. Aminoacids d. Carboxylic acid
  20. 20. 18 Problem If the volume containing gas is compressed to half, how many moles gas remained in the vessel? a. Just double b. Just half c. Same d. More than double
  21. 21. 19 Problem At same temperature calculate the ratio of average velocity of SO2 to CH4 a. 2:3 b. 3:4 c. 1:2 d. 1:6
  22. 22. 20 Problem If temperature of 1 mole of gas is increased by 500C, calculate the change in kinetic energy of the system a. 623.25J b. 6.235J c. 623.5J d. 6235.0J
  23. 23. 21 Problem Give name of the complex, name should specify the position of ligands. a. Bistransphosphinecarbonylchloroiridium [II] b. carbonylchlrobistransphosphineridium [III] c. carbonylchlrobistrasphosphineridium [I] d. chiorocarbonylbistranssphosphineriridium [I]
  24. 24. 22 Problem Ozonolysis products of an olefin are and Olefin is a. b. c. d.
  25. 25. 23 Problem A bubble of volume V1 is in the bottom of a pond at 150C and 1.5 atm pressure of 1atm V2 At 250C and have volume V2, give V1 a. 15.5 b. 0.155 c. 155.0 d. 1.55
  26. 26. 24 Problem Volume of 0.6M NaOH required to neutralize 30 cm3 of 0.4 M HCL is a. 20 cm3 b. 40 cm3 c. 45 cm3 d. 30 cm3
  27. 27. 25 Problem The orbital angular momentum of an electron in 3 s orbital is 1 h a. . 2 2 h b. 2 c. 1 h . 3 2 d. zero
  28. 28. 26 Problem Decomposition of H2O2 is prevented by a. KOH b. MnO2 c. Acetanilide d. Oxalic acid
  29. 29. 27 Problem The bad smelling substance formed by the action of alcoholic caustic potash on chloroform and aniline is a. Nitrobenzene b. Phenyl isocynaide c. Phenyl cyanide d. Phenyl isocyanide
  30. 30. 28 Problem What is the EAN of nickel in Ni(CO)4 ? a. 38 b. 30 c. 36 d. 32
  31. 31. 29 Problem P4 + 3NaOH + 3H2O A + 3NaH2PO2 here A is a. NH3 b. PH3 c. H3PO4 d. H3PO3
  32. 32. 30 Problem If solubility of calcium hydroxide is , then its solubility product will be a. 27 b. 3 c. 9 d. 3
  33. 33. 31 Problem Which of the following compounds is optically active ? a. (CH3)2CHCH2OH b. CH3CH2OH c. CCL2F2 d. CH3CHOHC2H5
  34. 34. 32 Problem Which compound is soluble in water ? a. CS2 b. C2H5OH c. CCL4 d. CHCL3
  35. 35. 33 Problem In a cubic structure of diamond which is made from X and Y, where X are at the corners of the cube and Y at the face cehters of the cube. The molecular formula of the compound is a. X2Y b. X3Y c. XY2 d. XY3
  36. 36. 34 Problem Bithonal is an example of a. Disinfectant b. Antiseptic c. Antibiotic d. Analgesic
  37. 37. 35 Problem A and B in the following reactions are a. b. c. d. A + RR’CH2CN,B=NaOH
  38. 38. 36 Problem Structure of XeF5+ ion is a. Trigonal bipyramidal b. Square pyramidal c. Octahedral d. Pentagonal
  39. 39. 37 Problem Mark out the most unlike form of polymerization of CH2 a. b. c. d.
  40. 40. 38 Problem Å R3 N - CH = CH 2 ¾ HBr ® ¾ Å a. R3 N - CH - CH 3 Br Å b. R3 N - CH 2 - CH 2 - Br Å e c. CH 2 = CH - N R3 B r d. No reaction
  41. 41. 39 Problem Markout the enthalpy of formation of carbon monoxide (CO) Given, C(s)+O2(g) CO(g) H = - 393.3 kJ/mol 1 CO(g) + O2(g) CO2(g) H= - 282.8 kJ/mol 2 a. 110.5 kJ/mol b. 676.1 kJ/mol c. 282.8 kJ/mol d. 300.0 kJ/mol
  42. 42. 40 Problem The magnetic moment of a transition metal ion is 3,87 BM. The number of unpaired Electrons present in it is a. 2 b. 3 c. 4 d. 5
  43. 43. FOR SOLUTIONS VISIT WWW.VASISTA.NET

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