4AB › Chemistry PYQ › CSIR NET › June 2015

1. Q1 — The pair of light source and atomizer resulting highest sensitivity to atomic absorption spectrometric · Analytical Chemistry
2. Q3 — Considering the following parameters with reference to the fluorescence of a solution: 1. Molar absorptivity · Analytical Chemistry
3. Q4 — The ¹¹⁹Sn NMR chemical shift (approximately in ppm) corresponding to (η⁵-Cp)₂Sn (relative to Me₄Sn) is · Inorganic Spectroscopy
4. Q5 — The correct relation between the following compounds is · General Organic Chemistry
5. Q9 — 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
6. Q10 — The correct order of magnitude of 'A values' for the given substituents in cyclohexane derivatives is X = · General Organic Chemistry
7. Q13 — Antitubercular drug(s) among the following is (are) · Natural Products
8. Q16 — The major product formed in following reaction is · Reagents, Reaction Mechanisms & Named Reactions
9. Q17 — The products A and B in the following reaction sequence are 18-crown-6, rt. A B · Reagents, Reaction Mechanisms & Named Reactions
10. Q19 — The major product formed in following reaction sequence is Pd(OAc)₂, PPh₃, Et₃N · Reagents, Reaction Mechanisms & Named Reactions
11. Q21 — The major product formed in following reaction sequence is hν, vycor filter, ClCH₂CH₂Cl, 80°C · Reagents, Reaction Mechanisms & Named Reactions
12. Q22 — The structures of A and B in the following reaction sequence are 2. heat A [2. H₃O⁺]1. LiAlH₄ B · Reagents, Reaction Mechanisms & Named Reactions
13. Q23 — Structure of the major product in the following synthetic sequence is 1. CuI 2. SeO₂ · Reagents, Reaction Mechanisms & Named Reactions
14. Q24 — The lowest energy-state of an atom with electronic configuration ns¹np¹ has the term symbol · Atomic and Molecular Term Symbol
15. Q25 — The electric-dipole allowed transition among the following is · Atomic and Molecular Term Symbol
16. Q26 — The term symbol for the first excited state of Be with the electronic configuration 1s² 2s¹ 3s¹ is · Atomic and Molecular Term Symbol
17. Q27 — The temperature-dependence of a reaction is given by k = AT² exp (-E₀/RT). The activation energy Ea of the · Chemical Kinetics
18. Q28 — For a reaction, 2A + B → 3Z, if the rate of consumption of A is 2 × 10⁻⁴ mol dm⁻³ s⁻¹ the rate of formation · Chemical Kinetics
19. Q29 — In a photochemical reaction, radicals formed according to the equation C₄H₁₀ + hν ⇌ 2 C₂H₅ C₂H₅ + C₂H₅ k₂ · Chemical Kinetics
20. Q31 — The temperature-dependence of an electrochemical cell potential is · Electrochemistry
21. Q32 — Conductometric titration of a strong acid with a strong alkali (MOH) shows linear fall of conductance up to · Electrochemistry
22. Q33 — The product C₂x · σxy (C₂x is the two-fold rotation axis around the x-axis and σxy is the xy mirror plane) is · Group Theory
23. Q34 — IR active normal modes of methane belong to the irreducible representation: · Group Theory
24. Q35 — For a reaction on a surface H₂ + + H At low pressure of H, the rate is proportional to · Surface Chemistry
25. Q37 — Match the action of H₂ O₂, in aqueous medium given in column A with the oxidation/reduction listed in column · Acids and Bases
26. Q38 — Water plays different roles in the following reactions. (i) 2H₂O+Ca → Ca²⁺+2OH⁻+H₂ (ii) nH₂O+Cl → [Cl(H₂O)n]⁻ · Acids and Bases
27. Q40 — Considering the following parameters with reference to the fluorescence of a solution: 1. Molar absorptivity · Analytical Chemistry
28. Q41 — The biological functions of carbonic anhydrase and carboxypeptidase A, respectively, are · Bioinorganic Chemistry
29. Q42 — The Fe-Nporphyrin bond distances in the deoxy and oxy-hemoglobin, respectively, are · Bioinorganic Chemistry
30. Q44 — The geometries of [Br₃]⁺and [I₅]⁺respectively, are · Chemical Bonding
31. Q45 — In transition metal phosphine (M-PR₃) complexes, the back-bonding involves donation of electrons from · Coordination Chemistry
32. Q46 — The lowest energy-state of an atom with electronic configuration ns¹np¹ has the term symbol · Coordination Chemistry
33. Q47 — Match the complexes given in column I with the electronic transitions (mainly responsible for their colours) · Coordination Chemistry
34. Q48 — Among the complexes, (A) K₄ [Cr(CN)₆], K₄ [Fe(CN)₆], (C) K₃ [Co(CN)₆], (D) K₄ [Mn(CN)₆], and Jahn-Teller · Coordination Chemistry
35. Q49 — The complex [Fe(phen)₂(NCS)₂] (phen 1,10-phenanthroline) shows spin cross-over behaviour CFSE and at μeff 250 · Coordination Chemistry
36. Q50 — The ¹¹⁹Sn NMR chemical shift (approximately in ppm) corresponding to (η⁵-Cp)₂Sn (relative to Me₄Sn) is · Inorganic Spectroscopy
37. Q51 — The reduced form of a metal ion M in a complex is NMR active. On oxidation, the complex gives an EPR signal · Inorganic Spectroscopy
38. Q52 — Mössbauer spectrum of a metal complex gives information about · Inorganic Spectroscopy
39. Q53 — Consider the following statements with respect to uranium (A) UO₂⁺ disproportionates more easily than UO₂²⁺ · Lanthanides and Actinides
40. Q54 — Consider the following statements for (NH₄)₂ [Ce (NO₃)₆](Z) (A) Coordination number of Ce is 12 (B) Z is · Lanthanides and Actinides
41. Q55 — All forms of phosphorus upon melting, exist as · Main Group Elements
42. Q56 — The correct set of pseudo halide anions is · Main Group Elements
43. Q57 — The binding modes of NO in 18 electron compounds [Co(CO)₃(NO)] and [Ni(η⁵-Cp)(NO)], respectively, are · Organometallic Compounds
44. Q58 — The role of copper salt as co-catalyst in Wacker process is · Organometallic Compounds
45. Q59 — For typical Fischer and Schrock carbenes, consider the following statements A. Oxidation state of metal is · Organometallic Compounds
46. Q60 — The refluxing of RhCl₃.3 H₂ O with an excess of PPh₃, in ethanol gives a complex A. Complex A and the valence · Organometallic Compounds
47. Q61 — The β-hydrogen elimination will be facile in · Organometallic Compounds
48. Q63 — According to Wade's theory the anion [B₁₂ H₁₂]²⁻ adopts · Organometallic Compounds
49. Q64 — The reaction of SbCl₃, with 3 equivalents of EtMgBr yields compound X. Two equivalents of SbI₃ react with one · Organometallic Compounds
50. Q65 — The following statements are given regarding the agostic interaction C-H----Ir observed in [Ir (Ph₃ P)₃ Cl] · Organometallic Compounds
51. Q66 — Match column A (coupling reactions) with column B (reagents) The correct match is: · Organometallic Compounds
52. Q67 — Amongst the following (A) [Mn (η⁵-Cp)(CO)₃] (B) [Os (η⁵-Cp)₂] (C) [Ru (η⁵-Cp)₂] and (D) [Fe (η⁵-Cp)₂] the · Organometallic Compounds
53. Q68 — Total number of vertices in metal clusters [Ru₆(C)(CO)₁₇] [Os₅(C)(CO)₁₅] and [Ru₅(C)(CO)₁₆] are 6,5 and 5 · Organometallic Compounds
54. Q72 — The ¹H NMR spectrum of a dilute solution of a mixture of acetone and dichloromethane in CDCl₃ exhibits two · Organic Spectroscopy
55. Q73 — Intense band generally observed for a carbonyl group in the IR spectrum is due to · Organic Spectroscopy
56. Q74 — Number of signals in the ¹³C{¹H} NMR spectrum of (R)-4-methylpentan-2-ol are · Organic Spectroscopy
57. Q75 — An organic compounds shows following spectral data: IR (cm⁻¹): 1680 ¹ H NMR (CDCl₃): δ 7.66(m, 1 H), 7.60(m · Organic Spectroscopy
58. Q76 — The major product formed in the following reaction is heat · Pericyclic Reactions
59. Q77 — The temperature-dependence of a reaction is given by k = AT₂exp (-E₀/RT). The activation energy Ea of the · Chemical Kinetics
60. Q78 — For a reaction, 2A + B → 3Z, if the rate of consumption of A is 2 × 10⁻⁴ mol dm⁻³s⁻¹ the rate of formation of · Chemical Kinetics
61. Q79 — For a given ionic strength, (I) rate of reaction is given by /(k₀) = -4 × 0.51 I1/2. Which of the following · Chemical Kinetics
62. Q80 — The intensity of a light beam decreases by 50% when it passes through a sample of 1.0 cm path length. The · Chemical Kinetics
63. Q81 — According to transition state theory, the temperature-dependence of pre-exponential factor (A) for a reaction · Chemical Kinetics
64. Q82 — In a photochemical reaction, radicals formed according to the equation C₄H₁₀ + hν ⇌ 2C₂H₅; C₂H₅ + C₂H₅ k₂ · Chemical Kinetics
65. Q85 — In a conductometric experiment for estimation of acid dissociation constant of acetic acid, the following · Data Analysis
66. Q86 — The correct Δ G for the cell reaction involving steps Zn(s) → Zn²⁺(aq) + 2e Cu²⁺(aq) + 2e → Cu(s) · Electrochemistry
67. Q87 — The temperature-dependence of an electrochemical cell potential is · Electrochemistry
68. Q88 — Conductometric titration of a strong acid with a strong alkali (MOH) shows linear fall of conductance up to · Electrochemistry
69. Q89 — The symmetric rotor among the following is · Molecular Spectroscopy
70. Q90 — The nuclear g-factors of ₁H and ₁₄N are 5.6 and 0.40 respectively. If the magnetic field in an NMR · Molecular Spectroscopy
71. Q91 — The spectroscopic technique, by which the ground state dissociation energies of diatomic molecules can be · Molecular Spectroscopy
72. Q92 — The intrinsic viscosity depends on the molar mass as [η] = KMa. The empirical constants K and a are dependent · Polymer Chemistry
73. Q93 — The stability of a lyophobic colloid is the consequence of · Polymer Chemistry
74. Q95 — The correct form for a simple Langmuir isotherm is · Polymer Chemistry
75. Q96 — The correct expression for the product (Mn · Mw) [Mn and Mw are the number average and weight average molar · Polymer Chemistry
76. Q97 — The average end-to-end distance of a random coil polymer of 10⁶ monomers (in units of segment length) is · Polymer Chemistry
77. Q98 — Silver crystallizes in face-cantered cubic structure. The 2nd order diffraction angle of a beam of X-ray (λ=1 · Solid State Chemistry
78. Q100 — The indistinguishability correction in the Boltzmann formulation is incorporated in the following way: (N = · Statistical Thermodynamics
79. Q101 — For a reaction on a surface At low pressure of H, the rate is proportional to · Surface Chemistry
80. Q103 — Heat capacity of a species is independent of temperature if it is · Thermodynamics
81. Q105 — A thermodynamic equation that relates the chemical potential to the composition of a mixture is known as · Thermodynamics

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