4AB › Chemistry PYQ › CSIR NET › December 2016

1. Q1 — For the reaction, HX (aq)+H₂O(l) gives H₃O⁺+X⁻ the highest value of [X⁻], when X⁻ is · Acid and Bases
2. Q2 — The primary analytical method (not using a reference) is: · Analytical Chemistry
3. Q3 — The oxidation state of gold in the following complex is · Chemical Bonding
4. Q4 — The numbers of triangular faces in square antiprism, icosahedron and tricapped trigonal prism (capped on · Chemical Bonding
5. Q5 — The expected number of ¹⁹F NMR spectral lines, including satellites, for [XeF₅]⁻ is [Abundance of ¹²⁹Xe (I = · Inorganic Spectroscopy
6. Q8 — The correct statement about the following compound is · General Organic Chemistry
7. Q9 — Methyl groups in the following compound are · General Organic Chemistry
8. Q12 — Correct characteristics of the functional groups of adenine in DNA base pair are · Natural Products
9. Q13 — The correct match for the following is · Natural Products
10. Q14 — ¹H NMR spectrum of an organic compound recorded on a 500 MHz spectrometer showed a quartet with line · Organic Spectroscopy
11. Q17 — The most stable product formed in the following reaction is · Reagents, Reaction Mechanisms & Named Reactions
12. Q21 — The correct starting compound A in the following reaction is (A) cat. CH₃CH₂CO₂H, heat · Reagents, Reaction Mechanisms & Named Reactions
13. Q22 — The highest molecular orbitals for an excited electronic configuration of the oxygen molecule are · Atomic and Molecular Term Symbol
14. Q23 — According to the transition state theory, the plot with slope equal to (Δ H)/R is · Chemical Kinetics
15. Q25 — For two reactions X(g)+Y(g) → Z(g) (1) M(g)+N(g) → P(g) (2) according to the collision theory, the ratio of · Chemical Kinetics
16. Q27 — Given (i) Zn + 4NH₃ → Zn(NH₃)₄²⁺ + 2e, Eo = 1.03 V (ii) Zn → Zn⁺² + 2e, E⁰ = 0.763 V the formation constant · Electrochemistry
17. Q28 — ¹H NMR spectrum of an organic compound recorded on a 500 MHz spectrometer showed a quartet with line · Molecular Spectroscopy
18. Q29 — Vibrations of diatomic molecules are usually modelled by a harmonic potential. If the potential is given by · Molecular Spectroscopy
19. Q30 — The rotational constant and the fundamental vibrational frequency of HBr are, respectively, 10 cm⁻¹ and 2000 · Molecular Spectroscopy
20. Q31 — In a 200 MHz NMR spectrometer, a molecule shows two doublets separated by 2 ppm. The observed coupling · Molecular Spectroscopy
21. Q32 — The volume of a gas adsorbed on a solid surface is 10.0 mL, 11.0 mL, 11.2 mL, 14.5 mL and 22.5 mL at 1.0 · Surface Chemistry
22. Q33 — Saturation factor in neutron activation analysis is (A= induced radioactivity, ψ= neutron flux, σ= effective · Surface Chemistry
23. Q34 — The equation of state for one mole of a gas is given by P(V - b) = RT, where b and R are constants. The value · Thermodynamics
24. Q35 — For the reaction, HX(aq)+H₂O(l) gives H₃O⁺+X⁻ the highest value of [X⁻], when X⁻ is · Acids and Bases
25. Q36 — Some molecules and their properties in liquid ammonia are given in columns A and B respectively. Match column · Acids and Bases
26. Q37 — The primary analytical method (not using a reference) is: · Analytical Chemistry
27. Q38 — In the catalytic hydration of CO₂ by carbonic anhydrase, CO₂ first interacts with · Bioinorganic Chemistry
28. Q39 — The number of inorganic Sulphur (or sulphide) atoms present in the metalloprotein active sites ofrubredoxin · Bioinorganic Chemistry
29. Q40 — From the following transformations, A. Epoxidation of alkene B. Dioldehydrase reaction C. Conversion of · Bioinorganic Chemistry
30. Q42 — Match the species in column X with their properties in column Y The correct answer is · Bioinorganic Chemistry
31. Q43 — The expected H-H-H bond angle in [H₃]⁺is · Chemical Bonding
32. Q44 — The HOMO (highest occupied molecular orbital) to LUMO (lowest unoccupied molecular orbital) electronic · Coordination Chemistry
33. Q45 — In the hydrolysis of trans-[Co(en)₂Cl(A)]⁺ if the leaving group is chloride, the formation of cis product is · Coordination Chemistry
34. Q46 — The nephelauxetic parameter β is highest for · Coordination Chemistry
35. Q47 — The ²Eg ← ⁴A2g transition in the electronic spectrum of [Cr (NH₃)₆]³⁺ occurs nearly at · Coordination Chemistry
36. Q48 — For [Ce (NO₃)₄ (OPPh₃)₂] from the following A. Its aqueous solution yellow-orange in B. Coordination number · Coordination Chemistry
37. Q49 — Consider the following statements for [FeO₄]⁴⁻ A. It is paramagnetic B. It has Td symmetry C. Adopts · Coordination Chemistry
38. Q50 — The spectroscopic ground state term symbols for the octahedral aqua complexes of Mn(II), Cr(III) and Cu(II) · Coordination Chemistry
39. Q51 — For OH⁻ catalysed SN1 conjugate base mechanism of [Co (NH₃)₅ Cl]²⁺, the species obtained in the first step of · Coordination Chemistry
40. Q52 — In the following redox reaction with an equilibrium constant K=2.0 × 10⁸ [Ru (NH₃)₆]²⁺+ [Fe (H₂ O₆)]³⁺ → [Ru · Coordination Chemistry
41. Q53 — The correct statement for a Fischer carbene complex is · Coordination Chemistry
42. Q54 — The highest molecular orbitals for an excited electronic configuration of the oxygen molecule are · Coordination Chemistry
43. Q55 — The reaction between PI₃, PSCl₃ and zinc powder gives P₃I₅ as one of the products. The solution state 31P NMR · Inorganic Spectroscopy
44. Q56 — For complex A, deuteration of NH protons does not alter the EPR spectrum. The number of hyper fine lines · Inorganic Spectroscopy
45. Q57 — Number of lines in the ¹⁹ F NMR spectrum of F₂ C(Br)-C(Br) Cl₂, at -120° C assuming it a mixture of static · Inorganic Spectroscopy
46. Q58 — The metal iodide with metallic lustre and high electrical conductivity is · Main Group Elements
47. Q59 — Consider the following statements for KC₈ : (A) It is paramagnetic (B) It has eclipsed layer structure (C) · Main Group Elements
48. Q60 — Among the following, choose the correct products that are formed in the reaction of S₂ Cl₂ with ammonia in · Main Group Elements
49. Q61 — The final product(s) of the reaction of arachno borane, B₄ H₁₀ with NMe₃ is/are · Main Group Elements
50. Q63 — The rate of alkene coordination to [PtCl₄]²⁻ is highest for · Organometallic Compounds
51. Q64 — Consider the following statements, I and II: I : [Rh(CO)₂ I₂]⁻ catalytically converts CH₃ I and CO to CH₃ COI · Organometallic Compounds
52. Q65 — The geometry of [ReH₉]²⁻ is · Organometallic Compounds
53. Q66 — According to isolobal analogy, the right set of fragments that might replace Co(CO)₃ in [Co₄(CO)₁₂] is · Organometallic Compounds
54. Q67 — According to Wade's rules, the correct structural types of [Co (η⁵-C₅ H₅) B₄ H₈] and [Mn (η²-B₃ H₈)(CO)₄] are · Organometallic Compounds
55. Q68 — The correct geometry of [Rh₆ C(CO)₁₅]²⁻ is · Organometallic Compounds
56. Q70 — In the IR spectrum, carbonyl absorption band for the following compound appears at · Organic Spectroscopy
57. Q71 — ¹H NMR spectrum of an organic compound recorded on a 500 MHz spectrometer showed a quartet with line · Organic Spectroscopy
58. Q73 — ¹H NMR spectrum of a mixture of benzene and acetonitrile shows two singlets of equal integration. The molar · Organic Spectroscopy
59. Q75 — The correct sequence of pericyclic reactions involved in the following transformation is · Pericyclic Reactions
60. Q77 — For a reaction with an activation energy of 49.8 kJ mol⁻¹, the ratio of the rate constants at 600 K and 300 · Chemical Kinetics
61. Q78 — According to the transition state theory, the plot with slope equal to (Δ H≠)/R is · Chemical Kinetics
62. Q80 — For two reactions X(g)+Y(g) → Z(g) (1) M(g)+N(g) → P(g) (2) according to the collision theory, the ratio of · Chemical Kinetics
63. Q81 — The rate of an acid-catalyzed reaction in aqueous solution follows the rate equation r = k[X⁺][Y²⁻][H⁺] If · Chemical Kinetics
64. Q82 — If the pre-exponential factor in Arrhenius equation is 1.6 × 10¹² s⁻¹, the value of the rate constant at · Chemical Kinetics
65. Q83 — In kinetic study of a chemical reaction, slopes are drawn at different times in the plot of concentration of · Chemical Kinetics
66. Q84 — Photochemical decomposition of HI takes place with the following mechanism HI + hν (Ia) → H + I; H + HI k₁ H₂ · Chemical Kinetics
67. Q86 — Arrhenius equations for two chemical reactions are: k₁ = A₁e-E₁/RT, k₂ = A₂e-E₂/RT. If E₁ > E₂ then at a · Chemical Kinetics
68. Q88 — 1.0 ohm⁻¹ dm² mol⁻¹, respectively, the solubility (in g L⁻¹) of the salt in water at 25°C is · Electrochemistry
69. Q89 — The ionic mobilities of NH₄⁺and HCO₃⁻are 6 × 10⁻⁴ V⁻¹ s⁻¹ and 5 × 10⁻⁴ V⁻¹ s⁻¹, respectively. The transport · Electrochemistry
70. Q90 — The ionic strength of a solution containing 0.008 M AlCl₃ and 0.005 M KCl is · Electrochemistry
71. Q91 — Given : (i) Zn + 4NH₃ → Zn(NH₃)₄²⁺ + 2e, E⁰ = 1.03 V (ii) Zn → Zn⁺² + 2e, E° = 0.763 V the formation of the · Electrochemistry
72. Q92 — The molecule that possesses symmetry S₄ element is · Group Theory
73. Q93 — For H₂O molecule, the electronic transition from the ground state to an excited state of B₁ symmetry is · Group Theory
74. Q94 — The pair of symmetry point groups that are associated with only polar molecules is · Group Theory
75. Q95 — ¹H NMR spectrum of an organic compound recorded on a 500 MHz spectrometer showed a quartet with line · Molecular Spectroscopy
76. Q96 — Vibrations of diatomic molecules are usually modelled by a harmonic potential. If the potential is given by · Molecular Spectroscopy
77. Q97 — The transition that belongs to the Lyman series in the hydrogen-atom spectrum is · Molecular Spectroscopy
78. Q98 — The rotational constant and the fundamental vibrational frequency of HBr are, respectively, 10 cm⁻¹ and 2000 · Molecular Spectroscopy
79. Q99 — Among the following, both microwave and rotational Raman active molecule is · Molecular Spectroscopy
80. Q100 — In a 200 MHz NMR spectrometer, a molecule shows two doublets separated by 2 ppm. The observed coupling · Molecular Spectroscopy
81. Q101 — Distribution of molar masses in a typical polymer sample is shown below The A, B and C represent · Polymer Chemistry
82. Q102 — Each void in a two dimensional hexagonal close-packed layer of circles is surrounded by · Solid State Chemistry
83. Q103 — The sin 2θ values obtained from X-ray powder diffraction pattern of a solid are 2x, 4x, 6x, 8x where x is · Solid State Chemistry
84. Q104 — The weight of configuration with two ups and three down spins in a system with five spin 1/2 particles is · Statistical Thermodynamics
85. Q105 — Partition function of a one – dimensional oscillator having equispaced energy level with energy spacing equal · Statistical Thermodynamics
86. Q106 — When 1 × 10⁻⁵ g of a fatty acid (M=602.3 g/mol) was placed on water as a surface film, a monomolecular layer · Surface Chemistry
87. Q107 — Mark-Houwink equation ([n]=KMa) is used for the determination of · Surface Chemistry
88. Q109 — The parameter which always decreases during a spontaneous process at constant S and V, is · Thermodynamics
89. Q110 — Triple point pressure of substances A, B, C and D are 0.2, 0.5, 0.8 and 1.2 bar, respectively. The substance · Thermodynamics
90. Q111 — The equation of state for one mole of a gas is given by PV-b=RT, where b and R are constants. The value of · Thermodynamics
91. Q112 — The partial derivative ((∂ T)/(∂ V))P is equal to · Thermodynamics

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