4AB › Chemistry PYQ › CSIR-NET › June 2014

1. Q1 — The use of dynamic inert atmosphere in thermogravimetric analysis (TGA): · 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. Q4 — The major product formed in the following photochemical reaction is · Photochemical Reactions
5. Q5 — The major products formed in the following are: · Reagents, Reaction Mechanisms & Named Reactions
6. Q6 — Consider the following reaction, · Reagents, Reaction Mechanisms & Named Reactions
7. Q7 — The products A and B in the following reaction sequence are: → (B) · Reagents, Reaction Mechanisms & Named Reactions
8. Q8 — The products A and B in the following reaction sequence are: B · Reagents, Reaction Mechanisms & Named Reactions
9. Q9 — The major products A and B in the following reaction sequence are: A B · Reagents, Reaction Mechanisms & Named Reactions
10. Q10 — The major products A and B in the following reaction sequence are: [i-PrOH, Me₂NH]aq. NaCN, MnO₂ B · Reagents, Reaction Mechanisms & Named Reactions
11. Q11 — When Si is doped with a Group V element · Solid State Chemistry
12. Q12 — The interplanar spacing of (110) planes in a cubic unit cell with lattice parameter a=4.242 Å is · Solid State Chemistry
13. Q13 — The number of configurations in the most probable state, according to Boltzmann formula, is · Statistical Thermodynamics
14. Q14 — The figure below represents the path followed by a gas during expansion from A → B. The work done is (L atm) · Thermodynamics
15. Q15 — Two phases α and β of a species are in equilibrium. The correct relations observed among the variables, T, p · Thermodynamics
16. Q16 — The correct statements for hollow cathode lamp (HCL) from the following are: (A) HCL is suitable for atomic · Analytical Chemistry
17. Q17 — If an enzyme fixes N₂, in plants by evolving H₂, the number of electrons and protons associated with that · Bioinorganic Chemistry
18. Q18 — Ozone present in upper atmosphere protects people on the earth · Bioinorganic Chemistry
19. Q19 — Molybdoenzymes can both oxidize as well as reduce the substrates, because · Bioinorganic Chemistry
20. Q20 — The cooperative binding of O₂ in hemoglobin is due to · Bioinorganic Chemistry
21. Q21 — Structures of SbPh₅ and PPh₅ respectively are · Chemical Bonding
22. Q22 — The maximum bond order obtained from the molecular orbitals of a transition metal dimer, formed as linear · Chemical Bonding
23. Q23 — The correct schematic molecular energy diagram for SF₆ molecule is: · Chemical Bonding
24. Q24 — NiBr₂ reacts with (Et) (Ph₂) P at -78° C in CS₂ to give red compound ' A ', which upon standing at room · Coordination Chemistry
25. Q25 — If L is a neutral mono-dentate ligand, the species, [AgL₄]²⁺, [AgL₆]²⁺ and [AgL₄]³⁺ respectively are · Coordination Chemistry
26. Q26 — [CoL₆]³⁺ is red in colour whereas [CoL₆′]³⁺ is green. L. and L′ respectively corresponds to, · Coordination Chemistry
27. Q27 — In its electronic spectrum, [V (H₂ O)₆]³⁺ exihibits two absorption bands, one at 17,800 (v₁) and the second · Coordination Chemistry
28. Q28 — The term symbol that is NOT allowed for the np² configuration is · Coordination Chemistry
29. Q29 — Reaction of [Ru (NH₃)₅(isonicotinamide)]³⁺ with [Cr (H₂ O)₆]³⁺ occurs by inner sphere mechanism and rate of · Coordination Chemistry
30. Q30 — Consider the second order rate constants for the following outer-sphere electron transfer [Fe(H₂O)₆]³⁺ / · Coordination Chemistry
31. Q31 — A 1: 2 mixture of Me₂ NCH₂ CH₂ CH₂ PPh₂ and KSCN with K₂ [PdCl₄] gives a square planar complex A. Identify · Coordination Chemistry
32. Q32 — Identify the correct statement about [Ni (H₂ O)₆]²⁺ and [Cu (H₂ O)₆]²⁺ · Coordination Chemistry
33. Q33 — Reaction of nitrosyltetrafluoroborate to Vaska's complex gives complex A with angle M-NO=124°. The complex A · Coordination Chemistry
34. Q34 — The ¹⁹F NMR spectrum of ClF₃ shows · Inorganic Spectroscopy
35. Q35 — The low temperature (-98°C) ¹⁹F NMR spectrum of SF₄, shows doublet of triplets with the point group symmetry. · Inorganic Spectroscopy
36. Q36 — The correct order of the isomeric shift in Mössbauer spectra (⁵⁷Fe source) of iron compounds is · Inorganic Spectroscopy
37. Q37 — The number of lines in the ESR spectrum of CD₃ is (the spin of D is 1) · Inorganic Spectroscopy
38. Q38 — EPR spectrum of a free radical containing nuclei with nonzero nuclear spin is obtained if the following · Inorganic Spectroscopy
39. Q39 — A comparison of the valence electron configuration of the elements, Sm and Eu suggests that · Lanthanides and Actinides
40. Q40 — Reactions of elemental as with hot and conc. HNO₃, and H₂ SO₄ respectively, give · Main Group Elements
41. Q41 — Chromite ore on fusion with sodium carbonate gives · Main Group Elements
42. Q42 — The correct order of decreasing electronegativity of the following atoms is, · Main Group Elements
43. Q43 — The correct order of the size of S, S²⁻, S²⁺ and S⁴⁺ species is, · Main Group Elements
44. Q44 — The nuclides among the following, capable of undergoing fission by thermal neutrons, are (A) ²³³U (B) ²³⁵U · Nuclear Chemistry
45. Q45 — For a low energy nuclear reaction, ²⁴ Mg(d, α)²² Na, the correct statements from the following are · Nuclear Chemistry
46. Q46 — The particles postulated to always accompany the positron emission among are: (A) neutrino (B) anti-neutrino · Nuclear Chemistry
47. Q47 — The ligand(s) that is (are) fluxional in [ (η⁵-C₅ H₅) (η-C₅ H₅) Fe(CO)₂] in the temperature range 221-298 K · Organometallic Compounds
48. Q48 — The typical electronic configurations of the transition metal centre for oxidative addition · Organometallic Compounds
49. 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
50. 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
51. Q51 — The total valence electron count and the structure type adopted by the complex [Fe₃(CO)₁₅C] respectively, are · Organometallic Compounds
52. 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
53. Q53 — Amongst the following which is not isolobal pairs · Organometallic Compounds
54. Q54 — The correct ¹³ C NMR chemical (δ) shift values of carbons labeled a-e in the following ester are · Organic Spectroscopy
55. Q55 — An organic compound gives following spectral data: IR : 2210, 1724 cm⁻¹, ¹ H NMR: δ 1.4(t, J=7.1 Hz, 3 H) · Organic Spectroscopy
56. Q56 — The mass spectrum of the product A, formed in the following reaction, exhibits M, M + 2, M + 4 peaks in the · Organic Spectroscopy
57. Q57 — In a Diels-Alder reaction, the most reactive diene amongst the following is · Pericyclic Reactions
58. Q58 — Pericyclic reaction involved in one of the steps of the following reaction sequence is · Pericyclic Reactions
59. Q59 — The major product formed in the following reaction is Δ · Pericyclic Reactions
60. Q60 — The major product formed in the following photochemical reaction is · Photochemical Reactions
61. Q61 — Amongst the following, the major products formed in the following photochemical reactions are A B C D · Photochemical Reactions
62. Q62 — Examine the following first order consecutive reactions. The rate constant (in s⁻¹ units) for each step is · Chemical Kinetics
63. Q63 — In the Lineweaver-Burk plot of (initial rate) ⁻¹ vs. (initial substrate concentration) ⁻¹ for an enzyme · Chemical Kinetics
64. Q64 — The fluorescence lifetime of a molecule in a solution is 5 × 10⁻⁹ s. The sum of all the noradiative rate · Chemical Kinetics
65. 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
66. 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
67. Q67 — In the graph below, the correct option, according to Kohlrausch law, is · Electrochemistry
68. Q68 — Solutions of three electrolytes have the same ionic strength and different dielectric constants as 4, 25 and · Electrochemistry
69. Q69 — Given; A. Fe(OH)₂(s) + 2e⁻ → Fe(s) + 2OH⁻(aq); E₀=-0.877 V B. Al³⁺(aq) + 3e⁻ → Al(s); E₀=1.66 V C. AgBr(aq) + · Electrochemistry
70. Q70 — The symmetry point group of propyne is · Group Theory
71. Q71 — Number of rotational symmetry axes for triclinic crystal system is · Group Theory
72. Q72 — The E × E direct product in D₃ point group contains the irreducible representations · Group Theory
73. Q73 — The result of the product C₂(x) C₂(y) is · Group Theory
74. Q74 — In radical chain polymerization the quantity given by the 'rate of monomer depletion, divided by the rate of · Polymer Chemistry
75. Q75 — The commutator of the kinetic energy operator, Tx and the momentum operator, px for the one dimensional case · Quantum Chemistry
76. Q76 — Consider a particle confined in a cubic box. The degeneracy of the level, that has an energy twice that of · Quantum Chemistry
77. Q77 — A particle in a one-dimensional box (potential zero between to a and infinite outside) has the ground state · Quantum Chemistry
78. Q78 — The ground state energy of hydrogen atom is -13.598 eV. The expectation values of kinetic energy, <T> and · Quantum Chemistry
79. 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
80. Q80 — If the ionization energy of H atom is x, the ionization energy of Li²⁺ is · Quantum Chemistry
81. Q81 — Simple Huckel molecular orbital theory · Quantum Chemistry
82. Q82 — A particle in a one dimensional harmonic oscillator in x-direction is perturbed by a potential λ x(λ is · Quantum Chemistry
83. Q83 — The spatial part of the wave function of the atom in its ground state is 1 s(1) 1 s(2). The spin part would be · Quantum Chemistry
84. Q84 — For a particle of mass m confined in a box of length L, assume Δ x=L. Assume further that Δ p(min)= ² 1 / 2 · Quantum Chemistry
85. Q85 — The angular momentum operator Lz=-i ħ (∂)/(∂ φ) has eigen functions of the form exp (iA φ). The condition · Quantum Chemistry
86. Q86 — A particle in a 1-dimensional box of length L is perturbed by a delta function potential, δ(x-L / 2), in the · Quantum Chemistry
87. Q87 — The operators S ±are defined by S ±=Sx ± iSy where Sx and Sy are components of the spin angular momentum · Quantum Chemistry
88. Q88 — A quantum particle with fixed initial energy E₀<V is allowed to strike the following four barriers · Quantum Chemistry
89. Q89 — For some one-electron system with l=0 and m=0, the functions N₀ e-σ and N₁(2-σ) e-σ refer respectively to the · Quantum Chemistry
90. Q90 — A Slater determinant corresponding to the ionic part of the ground state valence bond wave function of H₂ · Quantum Chemistry
91. 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
92. Q92 — Two different non-zero operators A and B(A ≠ B) satisfy the relation (A+B)(A-B)=A²-B² · Quantum Chemistry
93. Q93 — The degeneracy of an excited state of a particle in 3-dimensional cubic box with energy 3 times its ground · Quantum Chemistry
94. Q94 — When Si is doped with a Group V element · Solid State Chemistry
95. Q95 — A compound Ax By has a cubic structure with A atoms occupying all the corners of the cube as well as all the · Solid State Chemistry
96. Q96 — Two α particles having speeds S₁ and S₂ have kinetic 1 and 2 MeV respectively; the relationship between S₁ · Statistical Thermodynamics
97. Q97 — The translational, rotational and vibrational partition functions for a molecule are ftranslation = 10¹⁰ m⁻¹ · Statistical Thermodynamics
98. Q98 — The number of configurations in the most probable state, according to Boltzmann formula, is · Statistical Thermodynamics
99. Q99 — For the non dissociative Langmuir type adsorption of a gas on a solid surface at a particular temperature · Surface Chemistry
100. Q100 — The figure below represents the path followed by a gas during expansion from A → B. The work done is (L atm) · Thermodynamics
101. Q101 — In a bomb calorimeter, the combustion of 0.5 g of compound A (molar mass =50 g mol⁻¹) increased the · Thermodynamics
102. Q102 — The number of phases, components and degrees of freedom, when Ar is added to an equilibrium mixture of NO, O₂ · Thermodynamics

← December 2013 · December 2014 → · All CSIR-NET papers