4AB › Chemistry PYQ › CSIR NET › December 2011

1. Q1 — Match list I (compounds) with list II (structures), and select the correct answer using the codes given below. · Chemical Bonding
2. Q4 — The major product formed in the following reaction is · Reagents, Reaction Mechanisms & Named Reactions
3. Q10 — The term symbol for the ground state of nitrogen atoms is · Atomic and Molecular Term Symbol
4. Q11 — Observe the following electronic transition of a diatomic molecule. (A) ¹Σg⁺ → ³Σg⁺ (B) ¹Σu⁺ → ¹Σg⁺ (C) ¹Δu → · Atomic and Molecular Term Symbol
5. Q13 — At any temperature for the following reaction (D and T are deuterium and tritium respectively) correct · Chemical Kinetics
6. Q14 — An example of a relaxation method of measuring rates is: · Chemical Kinetics
7. Q15 — The half life of a zero order reaction (A → P) is given by (k = rate constant): · Chemical Kinetics
8. Q16 — For a reaction, the rate constant k at 27°C was found to be k = 5.4 × 10¹¹ e⁻⁵⁰. The activation energy of the · Chemical Kinetics
9. Q17 — "Phosphorescence" is represented as · Chemical Kinetics
10. Q18 — Using cuvettes of 0.5 cm path length, a 10⁻⁴ M solution of a chromophore shows 50% transmittance at certain · Chemical Kinetics
11. Q19 — The character table of the C2v point group is given below: The two functions φ = p₁ + 2p₂ + 2p₃ + p₄ and φ = · Group Theory
12. Q20 — Two α particles having speeds S₁ and S₂ have kinetic energies 1 and 2 MeV respectively; the relationship · Gaseous State
13. Q21 — The Q band in the vibrational spectrum of acetylene is observed in the · Molecular Spectroscopy
14. Q22 — The sodium D lines are due to ²P1/2 → ²S1/2(Δ E₁) and ²P1/2 → ²S1/2(Δ E₂) transitions. The splitting due to · Molecular Spectroscopy
15. Q23 — The osmotic pressure (π) of a polymer sample at different concentrations (c) was measured at T(K). A plot of · Polymer Chemistry
16. Q25 — If θr denotes the characteristic temperatures of rotation, then the magnitude of [θr, (H₂). θr (D₂)] / [θr(H · Statistical Thermodynamics
17. Q26 — Two α particles having speeds S₁ and S₂ have kinetic 1 and 2 MeV respectively; the relationship between S₁ · Statistical Thermodynamics
18. Q27 — Flocculation value of K₂SO₄ is much less than that of KBr for Sol A. Floccultion value of CaCl₂ is much less · Surface Chemistry
19. Q28 — The Langmuir adsorption isotherm is given by θ=kp/(1+kp), where P is the pressure of the adsorabate gas. The · Surface Chemistry
20. Q29 — 1 mol of CO₂, 1 mol of N₂ and 2 mol of O₂ were mixed at 300 K. The entropy of mixing is · Thermodynamics
21. Q30 — For the liquid ⇌ vapour equilibrium of a substance dP/dT at 1 bar and 400 K is 8 × 10⁻³ bar K⁻¹. If the molar · Thermodynamics
22. Q32 — The correct order of acidity among the following species is · Acid and Bases
23. Q33 — Superoxide dismutase contains the metal ions · Bioinorganic Chemistry
24. Q34 — Among the following drugs, the anticancer agents is: · Bioinorganic Chemistry
25. Q35 — The reduction of nitrogen to ammonia, carried out by the enzyme nitrogenase, needs, · Bioinorganic Chemistry
26. Q36 — A metal ion that replace manganese (II) ion in mangano-proteins without changing its function, is · Bioinorganic Chemistry
27. Q37 — In the bacterial rubredoxin, the number of iron atoms, sulfur bridges and cysteine ligands are Fe atom Sulfur · Bioinorganic Chemistry
28. Q38 — The number of anti-bonding electrons in NO and CO according to MO theory are respectively. · Chemical Bonding
29. Q39 — Among the following pairs, those in which both species have similar structures are: (A) N₃⁻, XeF₂ (B) · Chemical Bonding
30. Q40 — The term symbol for the ground state of nitrogen atoms is · Coordination Chemistry
31. Q41 — The complex that absorbs light of shortest wavelength is · Coordination Chemistry
32. Q42 — Green coloured Ni(PPh₂Et)₂Br₂, has a magnetic moment of 3.20 B.M. The geometry and the number of isomers · Coordination Chemistry
33. Q43 — Observe the following electronic transition of a diatomic molecule. (A) ¹Σg⁺ → ³Σg⁺ (B) ¹Σu⁺ → ¹Σg⁺ (C) ¹Δu → · Coordination Chemistry
34. Q44 — The electronic spectrum of [CrF₆]³⁻ shows three bands at 14,900 cm⁻¹, 22400 cm⁻¹ and 34,800 cm⁻¹. The value · Coordination Chemistry
35. Q45 — A true statement about base hydrolysis of [Co (NH₃)₅ Cl]²⁺ is: · Coordination Chemistry
36. Q47 — For the following outer sphere electron transfer reactions. [Co (NH₃)₆]²⁺+ [Co* (NH₃)₆]³⁺ → [Co (NH₃)₆]³⁺+ · Coordination Chemistry
37. Q48 — The coordination number and geometry of cerium in [Ce (NO₃)₆]²⁻ are respectively, · Coordination Chemistry
38. Q49 — The electric dipole allowed transition in a d² atomic system is · Coordination Chemistry
39. Q50 — In the ¹⁹ F NMR spectrum of PF₅, the number of signals and multiplicity, at room temperature are · Inorganic Spectroscopy
40. Q52 — The actual magnetic moment shows a large deviation from the spin-only formula in the case of · Lanthanides and Actinides
41. Q53 — The correct statement regarding closo-{BnHn} species is: · Main Group Elements
42. Q54 — Lewis acidity of BCl₃, BPh₃ and BMe₃ with respect to pyridine follows the order · Main Group Elements
43. Q55 — Among the following pairs (1) oxygen-sulfur (2) nitrogen-phosphorus (3) phosphorus arsenic (4) · Main Group Elements
44. Q56 — The reaction between NH₄ Br and Na metal in liquid ammonia (solvent) results in the products · Main Group Elements
45. Q57 — The material that exhibits the highest electrical conductivity among the following sulfur - nitrogen · Main Group Elements
46. Q58 — The final product (s) of the reaction P(OR)₃+R′ X is/are · Main Group Elements
47. Q59 — A Sodalite cage in zeolites is · Main Group Elements
48. Q60 — The styx code of B₄ H₁₀ is: · Main Group Elements
49. Q61 — Bayer's process involves. · Main Group Elements
50. Q62 — For the nuclear reactions. (A) ₄⁸Be → 2 ₂⁴He (B) ₃₆⁸⁰Kr → 2 ₁₈⁴⁰Ar (Given masses: ⁸Be = 8.005300, ⁴He = · Nuclear Chemistry
51. Q63 — Among the metals Mn, Fe, Co and Ni, the ones those would react in its native form directly with CO giving · Organometallic Compounds
52. Q64 — The correct combination of metal, number of carbonyl ligands and the charge for a metal carbonyl complex · Organometallic Compounds
53. Q65 — The stable cyclopentadienyl complex of beryllium is · Organometallic Compounds
54. Q66 — Reaction of Fe(CO)₅ with OH leads to complex A which on oxidation with MnO₂ gives B. Compounds A and B · Organometallic Compounds
55. Q67 — The number of metal-metal bonds in the dimers, [CpFe(CO)(NO)]₂ and [CpMo(CO)₃]₂ respectively, are · Organometallic Compounds
56. Q68 — In the trans- PtCl₂ L(CO) complex, the CO stretching frequency for L=NH₃, pyridine, NMe₃ decreases in the · Organometallic Compounds
57. Q69 — The catalyst involved in carrying out the metathesis of 1-butene to give ethylene and 3-hexene is: · Organometallic Compounds
58. Q70 — The greater stability of ((CH₃)₃ C-CH₂ ⁻)₄ Ti(A) compared to that of ((CH₃)₂ CH-CH₂ ⁻)₄ Ti(B) is due to · Organometallic Compounds
59. Q72 — In the mass spectrum of dodecahedron (C₂₀ H₂₀), approximate ratio of the peaks at m / z=260 and 261 is · Organic Spectroscopy
60. Q73 — An organic compound (MF = C₈H₁₀O) exhibited the following ¹H NMR spectral data: δ 2.5 (3H, s), 3.8 (3H, s) · Organic Spectroscopy
61. Q75 — Appropriate ¹H NMR chemical shifts (δ) for the protons A-D for the following compound are B A · Organic Spectroscopy
62. Q76 — In the following concerted reaction, the product is formed by a Δ · Pericyclic Reactions
63. Q79 — Two α particles having speeds S₁ and S₂ have kinetic energies 1 and 2 MeV respectively; the relationship · Atomic and Molecular Term Symbol
64. Q80 — The overall rate of the following complex reaction, 2 A k₁k₂⇌ A₂ (fast equilibrium) A+B k₂⇌ C (fast · Chemical Kinetics
65. Q81 — The concentration of a reactant undergoing decomposition was 0.1, 0.08 and 0.067 mol L⁻¹ after 1.0, 2.0 and · Chemical Kinetics
66. Q82 — An example of a relaxation method of measuring rates is: · Chemical Kinetics
67. Q83 — The decomposition of gaseous acetaldehyde at T(K) follows second order kinetics. The half-life of this · Chemical Kinetics
68. Q84 — For an enzyme catalyzed reaction, a Lineweaver-Burk plot gave the following data: slope = 40 s, intercept = 4 · Chemical Kinetics
69. Q85 — Observe the following aqueous solutions of same compound. All the measurements are made at same wavelength · Chemical Kinetics
70. Q87 — In the Michaelis-Menten mechanism for enzyme kinetics, the expression obtained is: v/([E]₀[S])=1.4 × · Chemical Kinetics
71. Q88 — One of the assumptions made in the conventional activated complex theory is: · Chemical Kinetics
72. Q90 — In least square fitting of a data set {XiYi} to the equation Y = A.X, the regression coefficient (A) is · Data Analysis
73. Q92 — For a potentiometric titration, in the curve of emf (E) vs volume (V) of the titrant added, the equivalence · Electrochemistry
74. Q93 — The standard electrode potentials (E°) of Fe³⁺/Fe²⁺ and Fe²⁺/Fe electrodes are + 0.77V and -0.44 V · Electrochemistry
75. Q94 — The overall reaction for the passage of 1.0 faraday of charge in the following cell Ag(s)-AgCl(s) | KCl(a₁) | · Electrochemistry
76. Q95 — The molecule diborane belongs to the symmetry point group · Group Theory
77. Q96 — The irreducible representations of C2h are Ag, Bg, Au and Bu. The Raman active modes of trans-1,3-butadiene · Group Theory
78. Q97 — The symmetry point group of the most stable geometry of the following molecule Cl(H)C=C=C(H)Cl is · Group Theory
79. Q99 — The character table for the D₄ point group is provided below: For this point group, the correct statement · Group Theory
80. Q100 — The character table of C3v point group is provided below, along with an additional reducible representation · Group Theory
81. Q101 — The molecule that possesses symmetry S₄ element is · Group Theory
82. Q102 — For H₂O molecule, the electronic transition from the ground state to an excited state of B₁ symmetry is · Group Theory
83. Q103 — The pair of symmetry point groups that are associated with only polar molecules is · Group Theory
84. Q104 — The uncertainty in the NMR frequency of a compound in liquid state (relaxation time = 1 s) is 0.1 Hz. The · Molecular Spectroscopy
85. Q105 — The NMR spectrum of AX, exhibits lines at δ=2.1 and 2.3 ppm (for X type protons) and = 4.1, 4.3, 4.5 and 4.7 · Molecular Spectroscopy
86. Q106 — The osmotic pressure (π) of a polymer sample at different concentrations (c) was measured at T(K). A plot of · Polymer Chemistry
87. Q108 — Identify which of the following operators is not hermitian? · Quantum Chemistry
88. Q109 — A particle is constrained in a one dimensional box of length 2a with potential V(x) = ∞; x < -a, x > a and · Quantum Chemistry
89. Q110 — For the eigen states of the hydrogen atom, which of the following relations between the expectation value of · Quantum Chemistry
90. Q112 — For non-degenerate perturbation theory for ground state, with E₀⁽⁰⁾ as zeroth order energy, E₀⁽¹⁾ as the · Quantum Chemistry
91. Q113 — An excited triplet state wave function of hydrogen molecule with the electronic configuration σg¹σu¹ has the · Quantum Chemistry
92. Q114 — The value of d₁₁₁ in a cubic crystal is 325.6 pm. The value of d₃₃₃ is · Solid State Chemistry
93. Q115 — Consider a n-type semiconductor whose EV = 0, EC = 2.0 eV and ED = 1.98 eV. The correct statement among the · Solid State Chemistry
94. Q116 — PA and PB denote the populations of two energy states EA and EB and EA > EB. The correct statement when the · Statistical Thermodynamics
95. Q117 — A system consisting of 4 identical and distinguishable particles, each possessing three available states of · Statistical Thermodynamics
96. Q121 — For a system of constant composition, the pressure (P) is given by. · Thermodynamics
97. Q122 — For the reaction C₂H₄(g) + 3O₂(g) → 2CO₂(g) + 2H₂O(l), the value of Δ H - Δ U (in kJ) at 300 K and 1 bar is · Thermodynamics
98. Q123 — 1 mol of CO₂, 1 mol of N₂ and 2 mol of O₂ were mixed at 300 K. The entropy of mixing is · Thermodynamics
99. Q124 — For the liquid ⇌ vapour equilibrium of a substance dP / dT at 1 bar and 400 K is 8 × 10⁻³ bar K⁻¹. If the · Thermodynamics
100. Q125 — The major products A and B in the following reaction sequence are Δ (A) (B) · Pericyclic Reactions
101. Q127 — The carbon-14 activity of an old wood sample is found to be 14.2 disintegrations min⁻¹ g⁻¹. Calculate age of · Chemical Kinetics
102. Q128 — The vibrational energy levels, v''=0 and v'=1 of a diatomic molecule are separated by 2143 cm⁻¹. Its · Molecular Spectroscopy

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