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Chemistry PYQ

CSIR-NET Chemistry June 2016 — 105 questions

Chemical Sciences, June 2016: every question we hold for this paper, with options, the answer where the source gives one, and an explanation where available.

  1. Q1 — Which of the following react(s) with AsF₅ in liquid BrF₃ ? · Acids and Bases
  2. Q2 — Consider the following reactions: (A) NOCl + Sn N₂O₄ (B) NOCl + AgNO₃ → (C) NOCl + BrF₃ → (D) NOCl + SbCl₅ → · Acids and Bases
  3. Q3 — Among KF, SnF, and SbF₄, solute(s) that increase(s) the concentration of BrF₃⁻ in BrF₃, is/are · Acids and Bases
  4. Q4 — Decomposition temperature of CaCO₃ in thermogravimetric analysis will be highest in dynamic atmosphere of: · Analytical Chemistry
  5. Q5 — Identify correct statements for the EPR spectrum of VO(acac)₂ [with square pyramidal geometry at vanadium] at · Inorganic Spectroscopy
  6. Q6 — The correct statements about conformations X and Y of 2-butanone are (X) (Y) (A) X is more stable than Y (B) · General Organic Chemistry
  7. Q7 — At pH 10, tryptophan exists as · Natural Products
  8. Q8 — The major products A and B formed in the following reaction sequence are + · Pericyclic Reactions
  9. Q9 — The major product formed in the following reaction is: · Reagents, Reaction Mechanisms & Named Reactions
  10. Q10 — The correct reagent combination to effect the following reaction is: · Reagents, Reaction Mechanisms & Named Reactions
  11. Q11 — Structures of the intermediate A and the major product B in the following reaction sequence are- · Reagents, Reaction Mechanisms & Named Reactions
  12. Q12 — The major products in the following reaction is: · Reagents, Reaction Mechanisms & Named Reactions
  13. Q13 — Experimentally determined rate law for the chemical reaction, 2NO₂F → 2NO₂+F₂ is R=k[NO₂F] The rate · Chemical Kinetics
  14. Q14 — Half-life t1/2 for a third order rection 3C→ products, where C₀ is the initial concentration of C, will be · Chemical Kinetics
  15. Q15 — In a potentiometric titration, the end point is characterised by · Electrochemistry
  16. Q16 — The point group obtained by adding symmetry operation σh to the point group C₄ is · Group Theory
  17. Q17 — The character table for the D₄ point group is provided below: For this point group, the correct statement · Group Theory
  18. Q18 — The figure below describes how a Carnot engine works. It starts from the adiabatic compression step denoted by · Thermodynamics
  19. Q19 — If U is a function of V and T, ((∂ U)/(∂ T))P is equal to (π and α are the internal pressure and the · Thermodynamics
  20. Q20 — Consider the following reactions: (A) NOCl+Sn N₂O₄ (B) NOCl+AgNO₃ → (C) NOCl+BrF₃ → (D) NOCl+SbCl₅ → · Acids and Bases
  21. Q21 — Among KF, SnF, and SbF₄, solute(s) that increase(s) the concentration of BrF₃⁻ in BrF₃, is/are · Acids and Bases
  22. Q22 — Decomposition temperature of CaCO₃ in thermogravimetric analysis will be highest in dynamic atmosphere of: · Analytical Chemistry
  23. Q23 — In the absence of bound globin chain, heme group on exposure to O₂ gives the iron-oxygen species · Bioinorganic Chemistry
  24. Q24 — Match the metal given in Column-A with its medicinal use as a compound in Column-B Correct match is · Bioinorganic Chemistry
  25. Q25 — Correct combination of number and size of rings present in a metal ion-porphine complex (including metal ion · Bioinorganic Chemistry
  26. Q26 — In human body cis- platinhydrolyzes to diaqua complex and modifies the DNA structure by binding to · Bioinorganic Chemistry
  27. Q27 — Correct combination for π and π* orbitals in B₂ molecule is · Chemical Bonding
  28. Q28 — The correct shape of [TeF₅]⁻ ion on the basis of VSEPR theory is · Chemical Bonding
  29. Q29 — The number of 3c-2e bonds present in Al (BH₄)₃ is- · Chemical Bonding
  30. Q30 — The expected H-H-H bond angle in [H₃]⁺is · Chemical Bonding
  31. Q31 — The oxidation state of gold in the following complex is 5 · Chemical Bonding
  32. Q32 — The numbers of triangular faces in square antiprism, icosahedron and tricapped trigonal prism (capped on · Chemical Bonding
  33. Q33 — [NiII L₆]n+ or n- shows absorption bands at 8500, 15400, and 26000 cm⁻¹ whereas [NiII L'₆]n+ or n- at 10750 · Coordination Chemistry
  34. Q34 — The number of microstates present in ³F-term is · Coordination Chemistry
  35. Q35 — Chelate effect is · Coordination Chemistry
  36. Q36 — The lowest energy term for the d⁶configuration is · Coordination Chemistry
  37. Q37 — The first excited state of hydrogen molecule is · Coordination Chemistry
  38. Q38 — Complex [Cr(bipyridyl)₃]³⁺, shows red phosphorescence due to transition · Coordination Chemistry
  39. Q39 — The complex that shows orbital contribution to the magnetic moment, is · Coordination Chemistry
  40. Q40 — Paramagnetic susceptibility of the order of 10⁻⁶ cm³mol⁻¹ observed for KMnO₄ is due to- · Coordination Chemistry
  41. Q41 — The room temperature magnetic moment (in BM) for a monomeric Cu (II) complex is greater than 1.73. This may · Coordination Chemistry
  42. Q42 — Identify correct statements for the EPR spectrum of VO(acac)₂ [with one pyramidal geometry at vanadium] at 77 · Inorganic Spectroscopy
  43. Q43 — The numbers of lines shown by the BH₃ part of the molecule Ph₃ P. ¹¹ BH₃ in the ¹ H and ¹¹ B NMR spectra are · Inorganic Spectroscopy
  44. Q44 — To record Mossbauer spectrum of Fe containing samples, a source 'X' is used. X after a nuclear transformation · Inorganic Spectroscopy
  45. Q45 — For monoionic complex [UO₂(NO₃)₃]⁻ the correct coordination number and geometry respectively, are · Lanthanides and Actinides
  46. Q46 — The g values for Ce³⁺ (4f¹) and Pr³⁺ (4f²) are, respectively · Lanthanides and Actinides
  47. Q47 — The numbers of P-S and P-P bonds in the compound P₄ S₃ are, respectively · Main Group Elements
  48. Q48 — The compound which dissolves in POCl₃ to give a solution with highest chloride ion concentration, is · Main Group Elements
  49. Q49 — In the ¹ H NMR spectrum of myrtenal, the two methyl groups are expected to display signals at (chemical shift · Organic Spectroscopy
  50. Q50 — A compound displays the following spectral data. The correct structure of the compound is IR: 1690 ~ cm ⁻¹. ¹ · Organic Spectroscopy
  51. Q51 — The frontier orbital interactions involved in the formation of the carbocation intermediate in the reaction · Pericyclic Reactions
  52. Q52 — The following transformation proceeds through two consecutive electrocyclic processes, which are · Pericyclic Reactions
  53. Q53 — The correct match for the reactions P-S with the names of cyclizations I-IV is Reactions: (P) (Q) (R) (S) · Pericyclic Reactions
  54. Q54 — The major products A and B formed in the following reaction sequence are + heat (A) hν (B) · Pericyclic Reactions
  55. Q55 — The correct match for the following transformations P-S with the processes I-IV is Reactions: (P) (Q) (R) (S) · Photochemical Reactions
  56. Q56 — If the rates of a reaction are R₁ and R₂ at concentrations C₁ and C₂ of a reactant respectively, the order of · Chemical Kinetics
  57. Q57 — Experimentally determined rate law for the chemical reaction, 2 NO₂ F → 2 NO₂+F₂ is R=k [NO₂ F] The rate · Chemical Kinetics
  58. Q58 — For the chemical reaction in aqueous solution, CH₂ ClCOO⁻+OH⁻ → CH₂ OHCOO⁻+Cl⁻ the correct statement is · Chemical Kinetics
  59. Q59 — If experimentally observed rate constant is greater than the maximum value of rate constant obtained using · Chemical Kinetics
  60. Q60 — Half-life t1 / 2 for a third order reaction 3C → products, where C₀ is the initial concentration of C, will be · Chemical Kinetics
  61. Q61 — In a titration, the percentage uncertainties in the measured aliquot volume and the measured titre volume are · Data Analysis
  62. Q62 — A physical observable, 'x', appears with the probability distribution e(-|2 x-12|) the average of x would be · Data Analysis
  63. Q63 — In a potentiometric titration, the end point is characterised by · Electrochemistry
  64. Q64 — The standard electrode potential E₀ at a fixed temperature and in a given medium is dependent on · Electrochemistry
  65. Q65 — Two aqueous 1:1 electrolyte systems A and B are at different temperatures TA and TB and CA and CB · Electrochemistry
  66. Q66 — The symmetry point group of the most stable geometry of the following molecule Cl(H) C=C=C(H) Cl is · Group Theory
  67. Q67 — The character table of C3 v point group is provided below, along with an additional reducible representation · Group Theory
  68. Q68 — In an NMR spectrometer containing a 2.5 T magnet, Larmor precession frequency of 1 H is 100 MHz. The · Molecular Spectroscopy
  69. Q69 — Upon application of a weak magnetic field, a line in the microwave absorption spectrum of rigid rotor splits · Molecular Spectroscopy
  70. Q70 — The condensation of hydroxy acid produces a polyster with the probability of linkage at both ends being p · Polymer Chemistry
  71. Q71 — The Hermitian conjugate of operator d / dx, called (d / dx), is actually equal to · Quantum Chemistry
  72. Q72 — The eigenfunctions of the Hamiltonian H(H=T+V) of a harmonic oscillator are (where T and V are kinetic energy · Quantum Chemistry
  73. Q73 — For a particle of mass m confined in a rectangular box with sides 2 a and a, the energy and degeneracy of the · Quantum Chemistry
  74. Q74 — Choosing some Hamiltonian H and an orthonormal basis, a linear variation is carried out to get approximately · Quantum Chemistry
  75. Q75 — Average value of momentum for the ground state of a particle in a 1-d box is zero because · Quantum Chemistry
  76. Q76 — For a hermitian operator A, which does NOT commute with the Hamiltonian H, let ψ₁ be an eigenfunction of A · Quantum Chemistry
  77. Q77 — The simultaneous eigen functions of angular momentum operators L² and LZ are · Quantum Chemistry
  78. Q78 — The ionization energy of hydrogen atom in its ground state is approximately 13.6 eV. The potential energy of · Quantum Chemistry
  79. Q79 — In simple molecular orbital theory of hydrogen molecule, bonding σg and anti-bonding σu molecular orbitals · Quantum Chemistry
  80. Q80 — The correct normalized wave function for one of the sp² hybrid orbitals is · Quantum Chemistry
  81. Q81 — The orbital degeneracy of the level of a one-electron atomic system with Z=5 and energy =-13.6 eV, is · Quantum Chemistry
  82. Q82 — If we write a normalized wave function ψ=A, then φ is also normalized when · Quantum Chemistry
  83. Q83 — The ground state of a certain system with energy ε₀, is subjected to a perturbation V, yielding a first order · Quantum Chemistry
  84. Q84 — The spatial part of an excited state b³ Σu⁺of hydrogen molecule is proportional to [1 σg(1) σu(2)-1 σg(2) · Quantum Chemistry
  85. Q85 — Which of the functions below is a common eigenfunction of d/dx and (d²)/(dx²) operators? · Quantum Chemistry
  86. Q86 — The number of degenerate spatial orbitals of a hydrogen-like atom with principal quantum number n=6 is · Quantum Chemistry
  87. Q87 — If [A, B]=0 and [A, C]=0, then which of the following necessarily holds: [A, B and C are operators] · Quantum Chemistry
  88. Q88 — The electronic transition energy from π₁ → π₂ in propenyl radical is 4.8 eV. Within the framework of Huckel · Quantum Chemistry
  89. Q89 — The transition moment integral for a rotational transition between J=1; MJ=0 and J=2; MJ=0 states for a · Quantum Chemistry
  90. Q90 — One of the correct normalized sp² hybridorbitals is · Quantum Chemistry
  91. Q91 — Consider a model system of five non interacting fermions in a single 3-dimensional harmonic oscillator. The · Quantum Chemistry
  92. Q92 — A particle is in a state φ=ψ₁+3 ψ₂ where ψ₁ and ψ₂ are eigenfunctions of the Hamiltonian of the particle with · Quantum Chemistry
  93. Q93 — The commutator of x with the Hamiltonian H.[x, H] is · Quantum Chemistry
  94. Q94 — The hydrogen atomic orbital given by Nr² e^(-r)/(3a₀) (3cos ²θ-1) represents · Quantum Chemistry
  95. Q95 — The function, which is NOT an eigenfunction of the indicated operator, is · Quantum Chemistry
  96. Q96 — In a cubic crystal, the plane [100] is equally inclined to the planes · Solid State Chemistry
  97. Q97 — For a simple cubic lattice, the ratio between the unit cell length and the separation of two adjacent · Solid State Chemistry
  98. Q98 — The single - partition translational partition function (f) for an ideal gas in a fixed volume V depends on · Statistical Thermodynamics
  99. Q99 — Adsorbtion isotherm of three gases A, B, C are shown in the following figure, where θ is the percentage of · Surface Chemistry
  100. Q100 — When river water containing colloidal clay flows into the sea, the major cause of silting is · Surface Chemistry
  101. Q101 — ((∂ H)/(∂ P))T has the dimension of · Thermodynamics
  102. Q102 — For an ideal gas at 300 K · Thermodynamics
  103. Q103 — Phase diagram of a compound is shown below The slopes of the lines OA, AC and AB are tan (π)/4, tan (π)/6 and · Thermodynamics
  104. Q104 — The figure below describes how a Carnot engine works. It starts from the adiabatic compression step denoted by · Thermodynamics
  105. Q105 — If U is a function of V and T, ((∂ U)/(∂ T))P is equal to (π and α are the internal pressure and the · Thermodynamics

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