4AB › Chemistry PYQ › CSIR NET › December 2013

1. Q1 — Among the following, the correct acid strength trend is represented by · Acid and Bases
2. Q2 — Water plays different roles in the following reactions. (i) 2H₂O + Ca → Ca²⁺ + 2OH⁻ + H₂ (ii) nH₂O + Cl → · Acids and Bases
3. Q5 — The energy of 2s and 2p orbitals is the same for · Chemical Bonding
4. Q6 — Amongst the following, the compound which has the lowest energy barrier for the cis-trans isomerisation is: · General Organic Chemistry
5. Q7 — The IUPAC name of the compound given below is · General Organic Chemistry
6. Q8 — The two benzylic hydrogens HA and HB in the compounds I and II, are (I) (II) · General Organic Chemistry
7. Q9 — The absolute configuration of the two stereogenic (chiral) centres in the following molecule is · General Organic Chemistry
8. Q10 — The correct statement about the following molecule is · General Organic Chemistry
9. Q11 — Consider the following statements about cis- and trans-decalins (A) cis-isomer is more stable than · General Organic Chemistry
10. Q12 — The correct order for the rates of electrophilic aromatic substitution of the following compound is (I) (II) · General Organic Chemistry
11. Q13 — For estrone, among the statements A-C, the correct ones are · Natural Products
12. Q15 — The major product B formed in the following reaction sequence, and overall yield of its formation are · Natural Products
13. Q17 — The peptide A on reaction with 1-fluoro-2, 4-dinitrobenzene followed by exhaustive hydrolysis gave · Natural Products
14. Q18 — In the IR spectrum of p-nitrophenyl acetate, the carbonyl absorption band appears at · Organic Spectroscopy
15. Q19 — The following reaction proceeds through a Δ · Pericyclic Reactions
16. Q20 — The number of nodes present in the highest occupied molecular orbital of 1,3,5-hexatriene in its ground state · Pericyclic Reactions
17. Q22 — The major product formed in the following reaction is: + 1. Heat · Reagents, Reaction Mechanisms & Named Reactions
18. Q24 — The major product formed in the following reaction is: 1. Hg(OAc)₂, H₂SO₄ · Reagents, Reaction Mechanisms & Named Reactions
19. Q25 — The major product formed in the following reaction sequence is: · Reagents, Reaction Mechanisms & Named Reactions
20. Q26 — In the following transformation, the reagent A and the major product B, respectively, are A Ac₂O/Δ B · Reagents, Reaction Mechanisms & Named Reactions
21. Q28 — The major product formed in the following reaction sequence is: · Reagents, Reaction Mechanisms & Named Reactions
22. Q29 — The major product formed in the following reaction sequence is: + · Reagents, Reaction Mechanisms & Named Reactions
23. Q31 — According to Arrhenius equation (k = rate constant and T = temperature) · Chemical Kinetics
24. Q32 — A first order gaseous reaction is 25% complete in 30 minutes at 227°C and in 10 minutes at 237°C. The · Chemical Kinetics
25. Q33 — In the reaction between NO and H₂ the following data are obtained Experiment I: PH₂ constant Experiment II · Chemical Kinetics
26. Q34 — 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
27. Q35 — The limiting molar conductivities of NaCl, NaI and RbI are 12.7, 10.8 and 9.1 mS m² mol⁻¹, respectively. The · Electrochemistry
28. Q36 — The number of ways in which four molecules can be distributed in two different energy levels is : · Statistical Thermodynamics
29. Q37 — The chemical potential (μi) of the ith component is defined as · Thermodynamics
30. Q38 — Among the following, the correct acid strength trend is represented by · Acids and Bases
31. Q39 — Match the action of H₂ O₂, in aqueous medium given in column A with the oxidation/reduction listed in column · Acids and Bases
32. Q41 — In the atomic absorption spectroscopic estimation of Fe(III) using O₂ / H₂ flame, the absorbance decreases · Analytical Chemistry
33. Q42 — Patients suffering from Wilson's disease have · Bioinorganic Chemistry
34. Q43 — High dose of dietary supplement ZnSO₄, for the cure of Zn deficiency · Bioinorganic Chemistry
35. Q44 — L-DOPA is used for treatment of · Bioinorganic Chemistry
36. Q45 — Oxidised form of enzyme catalase (structure A); prepared by the reaction of [Fe(P)]⁺ (P = porphyrin) with · Bioinorganic Chemistry
37. Q46 — The molecule in which the bond order increases upon addition of an electron · Chemical Bonding
38. Q47 — If a homonuclear diatomic molecule is oriented along the Z-axis, the molecular orbital formed by linear · Chemical Bonding
39. Q48 — According to VSEPR theory, the geometry (with lone pair) around the central iodine in I₃⁺and I₃⁻ ions · Chemical Bonding
40. Q49 — An octahedral metal ion M⁺² has magnetic moment of 4.0 B.M. The correct combination of metal ion and · Coordination Chemistry
41. Q50 — For an electronic configuration of two non-equivalent π electronics [π¹, π¹] which of the Following terms is · Coordination Chemistry
42. Q51 — Among the following, the correct combination of complex and its color is · Coordination Chemistry
43. Q52 — MnCr₂ O₄ is likely to have a normal spinel structure because · Coordination Chemistry
44. Q53 — Compounds K₂ Ba [Cu (NO₂)₆] (A) and Cs₂ Ba [Cu (NO₂)₆] (B) exhibit tetragonal elongation and tetragonal · Coordination Chemistry
45. Q55 — The ground state forms of Sm and Eu respectively, are · Lanthanides and Actinides
46. Q56 — The reaction of FeCl₃ · 6 H₂ O with SOCl₂ yields. · Main Group Elements
47. Q57 — Among the molten alkali metals, the example of an immiscible pair (in all proportions)is · Main Group Elements
48. Q58 — Treatment of ClF₃ with SbF₅ leads to the formation of a/an · Main Group Elements
49. Q59 — The reason for the chemical inertness of gaseous nitrogen at room temperature is best given · Main Group Elements
50. Q60 — Commonly used scintillator for measuring radiation is · Main Group Elements
51. Q61 — Two tautomeric forms of phosphorus acid are · Main Group Elements
52. Q62 — The solid state structure of aluminum fluoride is · Main Group Elements
53. Q63 — The orbital interactions shown below represent · Main Group Elements
54. Q64 — In a specific reaction, hexachlorocyclotriphosphazene, N₃P₃Cl₆ was reacted with a metal fluoride to obtain · Main Group Elements
55. Q66 — Number of isomeric derivatives possible for the neutral closo-carborane, C₂ B₁₀ H₁₂ is · Main Group Elements
56. Q67 — For higher boranes 3c-2e 'BBB' bond may be a part of their structures. In B₅ H₉, the number of such electron · Main Group Elements
57. Q68 — The bond order of the metal-metal bond in the dimeric complex [Re₂Cl₄(PMe₂Ph)₄] is · Organometallic Compounds
58. Q69 — Which of the following in NOT suitable as catalyst for hydroformylation? · Organometallic Compounds
59. Q70 — In a cluster, H₃CoRu₃(CO)₁₂ total number of electrons considered to be involved in its formation is · Organometallic Compounds
60. Q71 — Among the following clusters, A= [(H) Co₆(CO)₁₅] B= [(H)₂ Os₆(CO)₁₈] C= [(H)₂ Os₅(CO)₁₆] H is encapsulated in · Organometallic Compounds
61. Q72 — The correct statement regarding terminal/bridging CO groups in solid Co₄(CO)₁₂ and Ir₄(CO)₁₂ is · Organometallic Compounds
62. Q73 — The electrophile Ph₃ C reacts with [ (η⁵-C₅ H₅) Fe(CO)₂ (CDMe₂)]⁺to give a product A. The product A is formed · Organometallic Compounds
63. Q74 — Among the following, the correct statement is · Organometallic Compounds
64. Q75 — Substitution of L with other ligands will be easiest for the species · Organometallic Compounds
65. Q76 — Reaction of Ph₂PCH₂CH₂PPh₂ with [RhCl(CO)₂]₂ in a 2:1 molar ratio gives a crystalline solid A. The IR · Organometallic Compounds
66. Q77 — On reducing Fe₃(CO)₁₂ with an excess of sodium, a carbonylate ion is formed. The iron is isoelectronic with · Organometallic Compounds
67. Q78 — In the IR spectrum, carbonyl absorption band for the following compound appears at · Organic Spectroscopy
68. Q79 — An organic compound having the molecular formula C₁₀ H₁₄ exhibited two singlets in the ¹ H NMR spectrum, and · Organic Spectroscopy
69. Q81 — Methyl 4-oxopentanoate exhibited signals at δ 208, 172, 51, 37, 32 and 27 ppm in its ¹³ C NMR spectrum. The · Organic Spectroscopy
70. Q83 — The number of π electrons participating and the pericyclic mode in the following reaction are · Pericyclic Reactions
71. Q86 — A first order gaseous reaction is 25% complete in 30 minutes at 227°C and in 10 minutes at 237°C. The · Chemical Kinetics
72. Q87 — In the reaction between NO and H₂ the following data are obtained Experiment I: PH₂ constant Experiment II · Chemical Kinetics
73. Q89 — In the Lineweaver-Burk plot of (initial rate)⁻¹ vs. (initial substrate concentration)⁻¹ for an enzyme · Chemical Kinetics
74. Q91 — The masses recorded when a substance is weighed 4 times are 15.8, 15.4, 15.6 and 16.0 mg. The variance · Data Analysis
75. Q92 — In a potentiometric titration, the end point is obtained by observing · Electrochemistry
76. Q93 — Electrolysis of an aqueous solution of 1.0 M NaOH results in · Electrochemistry
77. Q94 — The cell voltage of Daniel cell [Zn |ZnSO₄(aq) | CuSO₄(aq) | Cu] is 1.07 V. If reduced potential of Cu²⁺ Cu · Electrochemistry
78. Q96 — The limiting molar conductivities of NaCl, NaI and RbI are 12.7, 10.8 and 9.1 mS m² mol⁻¹, respectively. The · Electrochemistry
79. Q97 — The transition that is allowed by x-polarized light in trans-butadiene is (The character table for C2h is · Group Theory
80. Q98 — The molecule with the smallest rotation partition function at any temperature among the following is: · Molecular Spectroscopy
81. Q100 — The C=O bond length is 120 pm in CO₂. The moment of inertia of CO₂ would be close to (masses of C and O are · Molecular Spectroscopy
82. Q101 — The orbital with two radial and two angular nodes is · Quantum Chemistry
83. Q103 — The quantum mechanical virial theorem for a general potential V(x, y, z) is given by (∂ v)/(∂ x)+y (∂ v)/(∂ · Quantum Chemistry
84. Q104 — Consider a particle in a one dimensional box of length 'a' with the following potential V(x)=ω x<0 V(x)=ω x>a · Quantum Chemistry
85. Q105 — The most probable value of 'r' for an electron in 1s orbital of hydrogen atom is 46. The angular momentum · Quantum Chemistry
86. Q106 — The angular momentum operator Ly · Quantum Chemistry
87. Q107 — The energy for a single electron excitation in cyclopropenium cation in Huckel theory is · Quantum Chemistry
88. Q108 — When Frenkel defects are created in an otherwise perfect ionic crystal, the density of the ionic crystal · Solid State Chemistry
89. Q109 — A compound of M and X atoms has a cubic unit cell. M atoms are at the corners and body centre position and X · Solid State Chemistry
90. Q110 — The angle at which the first order Bragg reflection is observed from (110) plane in a simple cubic unit cell · Solid State Chemistry
91. Q111 — Both NaCl and KCl crystallize with the fcc structure. However, the X-ray powder diffraction pattern of NaCl · Solid State Chemistry
92. Q112 — An element exists in two crystallographic - modifications with FCC and BCC structures. The ratio of the · Solid State Chemistry
93. Q113 — Metallic gold crystallizes in fcc structure with unit cell dimension of 4.00 Å. The atomic radius of gold is · Solid State Chemistry
94. Q117 — The molecule that has the smallest diffusion coefficient in water is · Surface Chemistry
95. Q118 — The correct thermodynamics relation among the following is · Thermodynamics
96. Q119 — The heat capacity of 10 mol of an ideal gas at a certain temperature is 300 JK⁻¹ at constant pressure. The · Thermodynamics
97. Q121 — The chemical potential (μi) of the ith component is defined as · Thermodynamics
98. Q122 — Work (w) involved in isothermal reversible expansion from Vi to Vf of n moles of an ideal gas is · Thermodynamics
99. Q123 — The boiling point of a solution of non-volatile solid is higher than that of the pure solvent. It always · Thermodynamics

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