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Chemistry PYQ

CSIR NET Chemistry June 2014 — 79 questions

Chemical Sciences, June 2014: every question we hold for this paper, with options, the answer where the source gives one, and an explanation where available.

  1. Q1 — The use of dynamic inert atmosphere in thermogravimetric analysis (TGA): (1) decreases decomposition · Analytical Chemistry
  2. Q2 — The correct non-linear and iso-structural pair is · Chemical Bonding
  3. Q3 — Atorvastatin (structure given below) is a · Natural Products
  4. Q5 — The major products formed in the following are: · Reagents, Reaction Mechanisms & Named Reactions
  5. Q7 — The products A and B in the following reaction sequence are: → (B) · Reagents, Reaction Mechanisms & Named Reactions
  6. Q8 — The products A and B in the following reaction sequence are: A B · Reagents, Reaction Mechanisms & Named Reactions
  7. Q11 — When Si is doped with a Group V element · Solid State Chemistry
  8. Q12 — The interplanar spacing of (110) planes in a cubic unit cell with lattice parameter a = 4.242 Å is · Solid State Chemistry
  9. Q13 — The number of configurations in the most probable state, according to Boltzmann formula, is · Statistical Thermodynamics
  10. Q15 — Two phases α and β of a species are in equilibrium. The correct relations observed among the variables, T, p · Thermodynamics
  11. Q16 — The correct statements for hollow cathode lamp (HCL) from the following are: (A) HCL is suitable for atomic · Analytical Chemistry
  12. Q17 — If an enzyme fixes N₂, in plants by evolving H₂, the number of electrons and protons associated with that · Bioinorganic Chemistry
  13. Q18 — Ozone present in upper atmosphere protects people on the earth · Bioinorganic Chemistry
  14. Q19 — Molybdoenzymes can both oxidize as well as reduce the substrates, because · Bioinorganic Chemistry
  15. Q20 — The cooperative binding of O₂ in hemoglobin is due to · Bioinorganic Chemistry
  16. Q21 — Structures of SbPh₅ and PPh₅ respectively are · Chemical Bonding
  17. Q22 — The maximum bond order obtained from the molecular orbitals of a transition metal dimer, formed as linear · Chemical Bonding
  18. Q24 — NiBr₂ reacts with (Et) (Ph₂) P at -78° C in CS₂ to give red compound ' A ', which upon standing at room · Coordination Chemistry
  19. Q25 — If L is a neutral mono-dentate ligand, the species, [AgL₄]²⁺, [AgL₆]²⁺ and [AgL₄]³⁺ respectively are · Coordination Chemistry
  20. Q26 — [CoL₆]³⁺ is red in colour whereas [CoL₆′]³⁺ is green. L. and L′ respectively corresponds to, · Coordination Chemistry
  21. Q27 — In its electronic spectrum, [V (H₂ O)₆]³⁺ exihibits two absorption bands, one at 17,800 (v₁) and the second · Coordination Chemistry
  22. Q28 — The term symbol that is NOT allowed for the np² configuration is · Coordination Chemistry
  23. Q29 — Reaction of [Ru (NH₃)₅(isonicotinamide)]³⁺ with [Cr (H₂ O)₆]³⁺ occurs by inner sphere mechanism and rate of · Coordination Chemistry
  24. Q30 — Consider the second order rate constants for the following outer-sphere electron transfer [Fe(H₂O)₆]³⁺ / · Coordination Chemistry
  25. Q32 — Identify the correct statement about [Ni (H₂ O)₆]²⁺ and [Cu (H₂ O)₆]²⁺ · Coordination Chemistry
  26. Q33 — Reaction of nitrosyltetrafluoroborate to Vaska's complex gives complex A with angle M-NO=124°. The complex A · Coordination Chemistry
  27. Q34 — The ¹⁹F NMR spectrum of ClF₃ shows · Inorganic Spectroscopy
  28. Q35 — The low temperature (-98°C) ¹⁹F NMR spectrum of SF₄, shows doublet of triplets with the point group symmetry. · Inorganic Spectroscopy
  29. Q36 — The correct order of the isomeric shift in Mössbauer spectra (⁵⁷Fe source) of iron compounds is · Inorganic Spectroscopy
  30. Q37 — The number of lines in the ESR spectrum of CD₃ is (the spin of D is 1) · Inorganic Spectroscopy
  31. Q38 — EPR spectrum of a free radical containing nuclei with nonzero nuclear spin is obtained if the following · Inorganic Spectroscopy
  32. Q39 — A comparison of the valence electron configuration of the elements, Sm and Eu suggests that · Lanthanides and Actinides
  33. Q40 — Reactions of elemental as with hot and conc. HNO₃, and H₂ SO₄ respectively, give · Main Group Elements
  34. Q41 — Chromite ore on fusion with sodium carbonate gives · Main Group Elements
  35. Q42 — The correct order of decreasing electronegativity of the following atoms is, · Main Group Elements
  36. Q43 — The correct order of the size of S, S²⁻, S²⁺ and S⁴⁺ species is, · Main Group Elements
  37. Q44 — The nuclides among the following, capable of undergoing fission by thermal neutrons, are (A) ²³³U (B) ²³⁵U · Nuclear Chemistry
  38. Q46 — The particles postulated to always accompany the positron emission among are: (A) neutrino, (B) · Nuclear Chemistry
  39. Q47 — The ligand(s) that is (are) fluxional in [(η⁵-C₅H₅)(η-C₅H₅)Fe(CO)₂] in the temperature range 221-298K, is · Organometallic Compounds
  40. Q48 — The typical electronic configurations of the transition metal centre for oxidative addition · Organometallic Compounds
  41. Q49 — The oxidation state of Ni and the number of metal-metal bonds in [Ni₂(CO)₆]²⁻ that are consistent with the 18 · Organometallic Compounds
  42. Q50 — The compound [Re₂ (Me₂ PPh)₂ Cl₄](M) having a configuration of σ² π⁴ δ² δ*2 can be oxidized to M⁺ and M²⁺ · Organometallic Compounds
  43. Q51 — The total valence electron count and the structure type adopted by the complex [Fe₃(CO)₁₅C] respectively, are · Organometallic Compounds
  44. Q52 — ¹H NMR spectrum of [η⁵-C₅H₅Rh)(C₂H₄)₂] at -20°C shows a typical AA' XX' pattern in the olefinic region. On · Organometallic Compounds
  45. Q53 — Amongst the following which is not isolobal pairs · Organometallic Compounds
  46. Q56 — The mass spectrum of the product A, formed in the following reaction, exhibits M, M + 2, M + 4 peaks in the · Organic Spectroscopy
  47. Q57 — In a Diels-Alder reaction, the most reactive diene amongst the following is · Pericyclic Reactions
  48. Q58 — Pericyclic reaction involved in one of the steps of the following reaction sequence is (i) heat (ii) (EtO)₃P · Pericyclic Reactions
  49. Q59 — The major product formed in the following reaction is Δ · Pericyclic Reactions
  50. Q63 — In the Lineweaver-Burk plot of (initial rate)⁻¹ vs. (initial substrate concentration)⁻¹ for an enzyme · Chemical Kinetics
  51. Q65 — For a first order reaction A → products, the plot of ln (([A]t)/([A]₀)) vs time, where [A]₀ and [A]t to · Chemical Kinetics
  52. Q66 — For a set of 10 observed data points, the mean is 8 and the variance is 0.04. The 'standard deviation' and · Data Analysis
  53. Q68 — Solutions of three electrolytes have the same ionic strength and different dielectric constants as 4, 25 and · Electrochemistry
  54. Q70 — The symmetry point group of propyne is · Group Theory
  55. Q71 — Number of rotational symmetry axes for triclinic crystal system is · Group Theory
  56. Q72 — The E × E direct product in D₃ point group contains the irreducible representations · Group Theory
  57. Q73 — The result of the product C₂(x)C₂(y) is · Group Theory
  58. Q74 — In radical chain polymerization the quantity given by the 'rate of monomer depletion, divided by the rate of · Polymer Chemistry
  59. Q75 — The commutator of the kinetic energy operator, Tx and the momentum operator, px for the one-dimensional case · Quantum Chemistry
  60. Q76 — Consider a particle confined in a cubic box. The degeneracy of the level, that has an energy twice that of · Quantum Chemistry
  61. Q78 — The ground state energy of hydrogen atom is -13.598 eV. The expectation values of kinetic energy, <T> and · Quantum Chemistry
  62. Q79 — If φ=0.8 φA+0.4 φB is a normalized molecular orbital of a diaotmic molecule AB, constructed from φA and φB · Quantum Chemistry
  63. Q80 — If the ionization energy of H atom is x, the ionization energy of Li⁺² is · Quantum Chemistry
  64. Q82 — A particle in a one dimensional harmonic oscillator in x-direction is perturbed by a potential λ x (λ is · Quantum Chemistry
  65. Q83 — The spatial part of the wave function of the atom in its ground state is 1s(1)1s(2). The spin part would be · Quantum Chemistry
  66. Q87 — The operators S_± are defined by S_± = Sx ± iSy where Sx and Sy are components of the spin angular momentum · Quantum Chemistry
  67. Q88 — A quantum particle with fixed initial energy E₀ < V is allowed to strike the following four barriers · Quantum Chemistry
  68. Q90 — A Slater determinant corresponding to the ionic part of the ground state valence bond wave function of H₂ · Quantum Chemistry
  69. Q91 — The simplest ground-state VB wave function of a diatomic molecule like HCl is written as ψ=ψH(1 s, 1) ψCl (3 · Quantum Chemistry
  70. Q92 — Two different non-zero operators A and B (A) satisfy the relation (A+B)(A-B)=A²-B² · Quantum Chemistry
  71. Q93 — The degeneracy of an excited state of a particle in 3-dimensional cubic box with energy 3 times its ground · Quantum Chemistry
  72. Q94 — When Si is doped with a Group V element · Solid State Chemistry
  73. Q95 — A compound AxBy has a cubic structure with A atoms occupying all the corners of the cube as well as all the · Solid State Chemistry
  74. Q97 — The translational, rotational and vibrational partition functions for a molecule are ftranslation = 10¹⁰ m⁻¹ · Statistical Thermodynamics
  75. Q98 — The number of configurations in the most probable state, according to Boltzmann formula, is · Statistical Thermodynamics
  76. Q99 — For the non dissociative Langmuir type adsorption of a gas on a solid surface at a particular temperature · Surface Chemistry
  77. Q100 — The figure below represents the path followed by a gas during expansion from A → B. The work done is (L atm) · Thermodynamics
  78. Q101 — In a bomb calorimeter, the combustion of 0.5 g of compound A (molar mass = 50 g mol⁻¹) increased the · Thermodynamics
  79. Q102 — The number of phases, components and degrees of freedom, when Ar is added to an equilibrium mixture of NO, O₂ · Thermodynamics

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