4AB › Chemistry PYQ › CSIR-NET › June 2011

1. Q1 — The highest occupied MO in N₂ and O₂⁺ respectively are (take x-axis as internuclear axis) · Chemical Bonding
2. Q2 — In the EPR spectrum of tetragonal Cu(II) complex, when g∥ > g⊥ > ge, the unpaired electron resides in the · Inorganic Spectroscopy
3. Q3 — The electronic configuration for gadalonium (Gd) is [Xe]4f⁷ 5d¹6s², where as that of Gd²⁺ is: · Lanthanides and Actinides
4. Q4 — Uranium fluorides co-precipitate with · Lanthanides and Actinides
5. Q5 — The oxidative addition and reductive elimination steps are favoured by · Organometallic Compounds
6. Q6 — A and F 3. A and D 4. C and E · Organometallic Compounds
7. Q7 — Oxidation occurs very easily in case of · Organometallic Compounds
8. Q8 — Complex in which organic ligand is having only σ-bond with metal is: · Organometallic Compounds
9. Q9 — The configurations at the two stereocentres in the compound given below are · General Organic Chemistry
10. Q10 — The two compounds given below are and · General Organic Chemistry
11. Q11 — In the most stable conformation of trans-1-t-butyl-3-methylcyclohexane, the substituents at C-1 and C-3 · General Organic Chemistry
12. Q12 — Among the carbocations given below (A) (B) (C) · General Organic Chemistry
13. Q13 — The relative rates of solvolysis of iodides A-C are · General Organic Chemistry
14. Q14 — The correct order of acidity of the following compound A-C is: · General Organic Chemistry
15. Q15 — The IUPAC name of the following compound is · General Organic Chemistry
16. Q16 — Among A-C, the compounds which can exhibit optical activity are · General Organic Chemistry
17. Q17 — With respect to electrophilic aromatic substitution, reactivity order of pyrrole, pyridine and indole is · General Organic Chemistry
18. Q18 — An optically active compound enriched with R-enantiomer (60% ee) exhibited [α]D+90°. If the [α]D value of the · General Organic Chemistry
19. Q19 — Papaverine on oxidation with potassium permanganate gives a ketone, which on fusion with potassium hydroxide · Natural Products
20. Q20 — The major product formed on nitration (HNO₃/H₂SO₄) of uridine followed by reduction with tin and HCl is: · Natural Products
21. Q21 — The major product formed in the reaction sequence is: · Natural Products
22. Q22 — In the mass spectrum of the compound given below, during the α-cleavage, the order of preferential loss of · Organic Spectroscopy
23. Q23 — The concerted photochemical reaction between two olefins leading to a cyclobutane ring is: · Pericyclic Reactions
24. Q24 — The structures of the major products X and Y in the following transformation are + Δ X Y · Pericyclic Reactions
25. Q25 — The concerted photochemical reaction between two olefins leading to a cyclobutane ring is: · Photochemical Reactions
26. Q26 — The major product formed in the reaction given below is: · Reagents, Reaction Mechanisms & Named Reactions
27. Q27 — The major compound X formed in the following reaction exhibited a strong absorption at umax 1765,mathrmcm⁻¹ · Reagents, Reaction Mechanisms & Named Reactions
28. Q28 — The intermediate A and the major product B in the following conversion are A B · Reagents, Reaction Mechanisms & Named Reactions
29. Q29 — The major product formed in the following reaction is: · Reagents, Reaction Mechanisms & Named Reactions
30. Q30 — In the following reaction sequence, the correct structures for the major products X and Y are · Reagents, Reaction Mechanisms & Named Reactions
31. Q31 — The major product formed in the following reaction is: · Reagents, Reaction Mechanisms & Named Reactions
32. Q32 — The major product formed in the following transformation is: · Reagents, Reaction Mechanisms & Named Reactions
33. Q33 — The major product formed in the following transformation is: · Reagents, Reaction Mechanisms & Named Reactions
34. Q34 — The term symbol of a molecule with electronic configuration (1 σg)² (1 σu)² (2 σg)² (2 σu)² (2 πu)¹ (2 πu)¹ · Atomic and Molecular Term Symbol
35. Q35 — The possible J values for ³ D term symbol are · Atomic and Molecular Term Symbol
36. Q36 — For an aqueous solution at 25°C, the Debye-Huckel limiting law is given by · Electrochemistry
37. Q37 — An ideal gas expands by following an equation PVa= constant. In which case does one expect heating? · Gaseous State
38. Q38 — For an assembly of molecules (molar mass =M) at temperature T, the standard deviation of Maxweller's speed is · Gaseous State
39. Q39 — The virial expansion for a real gas can be written in either of the following forms: PV/RT=1+BP P+CP P²+… · Gaseous State
40. Q40 — The microwave spectrum of a molecule yields three rotational constants. The molecule is · Molecular Spectroscopy
41. Q41 — 1.1 2.2 3.3 4.4 · Quantum Chemistry
42. Q42 — A constant of motion is defined by the equation: · Quantum Chemistry
43. Q43 — The hermitian conjugate of operator d / d x, called (d / d x), is actually equal to · Quantum Chemistry
44. Q44 — The energy levels for cyclobutadiene are α+2 β, α, α and α-2 β. The delocalization energy in this molecule is: · Quantum Chemistry
45. Q45 — For a certain particle encountering a barrier, the tunneling probability is approximately e⁻¹⁰. If the mass · Quantum Chemistry
46. Q46 — An operator A is defined as A=-d/d x+x. Which one of the following statements is true? · Quantum Chemistry
47. Q47 — the amount of energy (in kJ/mol) released during this process is (given: U=235.0439 amu, Ba=141.9164 amu · Surface Chemistry
48. Q48 — 1.1 2.2 3.3 4.4 · Thermodynamics
49. Q49 — Thermodynamics – General · Thermodynamics
50. Q50 — The correct order of acidity among the following species is · Acids and Bases
51. Q51 — Correct statement for 'Inductively Coupled Plasma Atomic Emission Spectroscopy' is · Analytical Chemistry
52. Q52 — Thermometric titration gives best results when A. |Δ H| is high B. Δ G<0 C. Heat of mixing of titrant with · Analytical Chemistry
53. Q53 — The FALSE statement for a polarographic measurement procedure is: · Analytical Chemistry
54. Q54 — The ligand system present in vitamin B₁₂ is: · Bioinorganic Chemistry
55. Q55 — Among SF₄⁻, BF₄⁻, XeF₄, and ICl₄⁻, the number of species having two lone pair of electrons central atom · Chemical Bonding
56. Q56 — In the molecules H₂ O, NH₄ and CH₄ · Chemical Bonding
57. Q57 — According to VSEPR theory, the molecule/ion having ideal tetrahedral shape is · Chemical Bonding
58. Q58 — The highest occupied MO in N₂ and O₂⁺respectively are (take x -axis as internuclear axis) · Chemical Bonding
59. Q59 — The molecule with highest number of lone-pairs and has a linear shape based on VSEPR theory is: · Chemical Bonding
60. Q60 — The number of anti-bonding electrons in NO and CO according to MO theory are respectively. · Chemical Bonding
61. Q61 — Among the following pairs, those in which both species have similar structures are: (A) N₃⁻, XeF₂ (B) · Chemical Bonding
62. Q62 — Match list I (compounds) with list II (structures), and select the correct answer using the codes given below. · Chemical Bonding
63. Q63 — Ni (CN₄)²⁻ and Ni (Cl₄)²⁻ complex ions are : · Coordination Chemistry
64. Q64 — According To Crystal Field Theory, Ni²⁺ can two have unpaired electrons in · Coordination Chemistry
65. Q65 — The term symbol of a molecule with electronic configuration: (1σg)²(1σu)²(2σg)²(2σu)²(1πu)¹(1πu)¹ is: · Coordination Chemistry
66. Q66 — Consider two redox pairs: (1) Cr(II)/Ru(III) (2) Cr(II)/Co(III) The rate of acceleration in going from a · Coordination Chemistry
67. Q67 — The complex [Mn(H₂O)₆]²⁺ has very light pink colour. The best reason for it is · Coordination Chemistry
68. Q68 — The correct order of LMCT energies is: · Coordination Chemistry
69. Q69 — For the complexes (A) [Ni(H₂O)₆]²⁺ (B) [Mn(H₂O)₆]²⁺ (C) [Cr(H₂O)₆]³⁺ (D) [Ti(H₂O)₆]³⁺ the ideal octahedral · Coordination Chemistry
70. Q70 — The possible J values for ³D term symbol are · Coordination Chemistry
71. Q71 — Which of the following compound show a charge-transfer band? · Coordination Chemistry
72. Q72 — Cis and trans complexes of the type [PtA² X²] are distinguished by · Coordination Chemistry
73. Q73 — The number of possible isomers for [Ru(bpy)₂ Cl₂] is (bpy=2,2 '- bipyridine) d-cis-form · Coordination Chemistry
74. Q74 — Consider the compounds, (A) SnF₄(B) SnCl₄ and (C) R₃ SnCl. The nuclear quadrupole splitting are observed for. · Inorganic Spectroscopy
75. Q75 — The correct value of isomer shift (in Mossbauer spectra) and its explanation for Fe(II)-TPP and Fe(III)-TPP · Inorganic Spectroscopy
76. Q76 — The low temperature (-98°C) ¹⁹F NMR spectrum of SF₄, shows doublet of triplets with the point group symmetry. · Inorganic Spectroscopy
77. Q77 — Among the following statements, identify the correct ones for complexes of lanthanide (III) ion. (A) · Lanthanides and Actinides
78. Q78 — Statement I: The sizes of Zr and Hf are similar Statement II: Size of Hf is affected by lanthanide · Lanthanides and Actinides
79. Q79 — The correct order of stability of difluorides is: · Main Group Elements
80. Q80 — Alkali metal superoxides are obtained by the reaction of · Main Group Elements
81. Q81 — Match List-I (compounds) with List-II (application) and select the correct answer using the codes given below · Main Group Elements
82. Q82 — Among the following, the number of anhydrides of acids are CO, NO, N₂ O₃, B₂ O₃, N₂ O₅, SO₃ and P₄ O₁₀ · Main Group Elements
83. Q83 — Consider the nuclear reaction ₉₂ X²³⁴+β+α → Y+γ+2 β⁺ Y is · Nuclear Chemistry
84. Q84 — The species ¹⁹ Ne and ¹⁴ C emit a positron and β-particle respectively. The resulting species formed are · Nuclear Chemistry
85. Q85 — Among the metals Mn, Fe, Co and Ni, the ones those would react in its native form directly with CO giving · Organometallic Compounds
86. Q86 — In the H₂ Ru₆(CO)₁₈ cluster, containing 8-coordinated Ru centers, the hydrogen atoms are · Organometallic Compounds
87. Q87 — In the hydroformylation reaction, the intermediate CH₃CH₂CH₂Co(CO)₄ : · Organometallic Compounds
88. Q88 — In Ziegler-Natta catalysis the commonly used catalyst system is: · Organometallic Compounds
89. Q89 — The absorption at λmax =279 nm(ε=15) in the UV spectrum of acetone is due to · Organic Spectroscopy
90. Q90 — In the broad band decoupled ¹³ C NMR spectrum, the numbers of signals apperating for the bicyclooctane A-C · Organic Spectroscopy
91. Q91 — In the mass spectrum of dichlorobenzene the ratio of the peaks at m / z 146, 148 and 150, is: · Organic Spectroscopy
92. Q92 — The major compound X formed in the following reaction exhibited a strong absorption at v m a x =1765 cm⁻¹ in · Organic Spectroscopy
93. Q93 — An organic compound A (C₈ H₁₆ O₂) on treatment with an excess of methyl-magnesium chloride generated two · Organic Spectroscopy
94. Q94 — The reaction given below is an example of · Pericyclic Reactions
95. Q95 — The concerted photochemical reaction between two olefins leading to a cyclobutane ring is: · Pericyclic Reactions
96. Q96 — The structures of the major products X and Y in the following transformation are + Δ X Y · Pericyclic Reactions
97. Q97 — The intermediate involved in the reaction given below is : · Photochemical Reactions
98. Q98 — The concerted photochemical reaction between two olefins leading to a cyclobutance ring is : · Photochemical Reactions
99. Q99 — For an assembly of molecules (molar mass =M) at temperature T, the standard deviation of Maxweller's speed is · Atomic and Molecular Term Symbol
100. Q100 — The virial expansion for a real gas can be written in either of the following forms: P V/R T =1+Bp P+Cp P²+… · Atomic and Molecular Term Symbol
101. Q101 — The half-life of a zero order reaction (A → P) is given by (k= rate constant): · Chemical Kinetics
102. Q102 — The decomposition of gaseous acetaldehyde at T(K) follows second order kinetics. The half-life of this · Chemical Kinetics
103. Q103 — For an enzyme catalyzed reaction, a Lineweaver-Burk plot gave the following data: slope =40 s, intercept =4 · Chemical Kinetics
104. Q104 — Observe the following aqueous solutions of same compound. All the measurements are made at same wavelength · Chemical Kinetics
105. Q105 — If the specific conductances of a sparingly soluble (1:1) salt (MW =200 g mol⁻¹) in its saturated aqueous · Electrochemistry
106. Q106 — Debey-Hückel screening length (κ⁻¹) is a measure of size of diffuse ion cloud around an ion, provided (2 e² · Electrochemistry
107. Q107 — If the ratio of composition of oxidized and reduced species in electrochemical cell, is given as · Electrochemistry
108. Q108 — Given the character table of the point group C3 V Consider the reducible representation, Γ Its irreducible · Group Theory
109. Q109 — Refer to the character table of the point group C3 V given above. Find which of the following transition is · Group Theory
110. Q110 — The character table of the C2 v point group is given below: 1 atom of cis-butadiene and σv is the molecular · Group Theory
111. Q111 — Among the following, the CORRECT statement is: · Group Theory
112. Q112 — A square pyramidal, MX₄, molecule belongs to C4v point group. The symmetry operations are: E, 2C₄, C₂, 2σv · Group Theory
113. Q113 — Character table of C2 V point group is: If the initial and final states belong to A₁ and B₁ irreducible · Group Theory
114. Q114 — The molecular that has an S₆ symmetry element is · Group Theory
115. Q115 — The number of IR active vibrational modes of pyridine is: · Group Theory
116. Q116 — A molecules contains the following symmetry operations: E, 2 C₆, 2 C₃, C₂, 3 σd, 3 σv. The number of classes · Group Theory
117. Q117 — Identify the Mulliken notation for the following irreducible representation 2 · Group Theory
118. Q118 — Identify the point group symmetry of the following molecule (all C-C bond lengths are equal) · Group Theory
119. Q119 — The transition that is allowed by x-polarized light in trans-butadiene is (The character table for C2h is · Group Theory
120. Q120 — The symmetry point group of propyne is · Group Theory
121. Q121 — Number of rotational symmetry axes for triclinic crystal system is · Group Theory
122. Q122 — The E × E direct product in D₃ point group contains the irreducible representations · Group Theory
123. Q123 — The result of the product C₂(x) C₂(y) is · Group Theory
124. Q124 — A molecule, AX, has a vibrational energy of 1000 cm⁻¹ and rotational energy of 10 cm⁻¹. Another molecule, BX · Molecular Spectroscopy
125. Q125 — At room temperature, which molecule has the maximum rotational entropy? · Molecular Spectroscopy
126. Q126 — The Q band in the vibrational spectrum of acetylene is observed in the · Molecular Spectroscopy
127. Q127 — In IR spectrum of [Co(CN)₅ H]³⁻ the Co-H stretch is observed at 1840 cm⁻¹. The (Co-D) stretch in [Co(CN)₅ · Molecular Spectroscopy
128. Q128 — The Stark splitting for a given field is larger for a molecule AX as compared to BX. Which one of the · Molecular Spectroscopy
129. Q129 — The uncertainty in the NMR frequency of a compound in liquid state (relaxation time =1 s) is 0.1 Hz. The · Molecular Spectroscopy
130. Q130 — 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
131. Q131 — For a given nuclear fission reaction of U ₉₂²³⁵ U+ ₀¹ n → ₅₆¹⁴² Ba+ ₃₆⁹¹ Kr+3 ₀¹ n the amount of energy (in · Nuclear Chemistry
132. Q132 — Saturation factor in neutron activation analysis is (A= induced radioactivity, ψ= neutron flux, σ= effective · Nuclear Chemistry
133. Q133 — The penetrating power (R) and ionizing power (I) of α, β, and γ rays follow the ordering · Nuclear Chemistry
134. Q134 — The reactive cross section is expected to be the largest for the reaction · Nuclear Chemistry
135. Q135 — 141.9164 amu, ⁹¹ Kr=90.9234 amu, neutron =1.00866 amu) · Nuclear Chemistry
136. Q136 — There are several types of mean molar masses for polymer and they are dependent on experimental methods like · Polymer Chemistry
137. Q137 — The normalized hydrogen atom 1 s wave function is given by ψ1 s=1/(√(π)) ((ζ)/(a₀))² e^-(σ₀)/(a₀) where ζ=1 · Quantum Chemistry
138. Q138 — A constant of motion is defined by the equation: · Quantum Chemistry
139. Q139 — The unperturbed energy levels of a system are ε₀=0, ε₁=2 and ε₂=4. The second order correction to energy for · Quantum Chemistry
140. Q140 — The energy levels for cyclobutadiene are α+2 β, α, α and α-2 β. The delocalization energy in this molecule is: · Quantum Chemistry
141. Q141 — For a certain particle encountering a barrier, the tunneling probability is approximately e⁻¹⁰. If the mass · Quantum Chemistry
142. Q142 — An operator A is defined as A=-d / dx+x. Which one of the following statements is true? · Quantum Chemistry
143. Q143 — For a H₂ molecule, the ground state wave function is ψ1,2=φ1,2 σ(1,2) where φ refers to the space part and σ · Quantum Chemistry
144. Q144 — A hydrogenic orbital with radial function of the form rα exp [-β r] and φ-part as exp [-3 i φ] corresponds to · Quantum Chemistry
145. Q145 — A one-dimensional crystal of lattice dimension 'a' is metallic. If the structure is distorted in such a way · Solid State Chemistry
146. Q146 — The possible J values for 3 D term symbol are · Statistical Thermodynamics
147. Q147 — The term symbol for the ground state of nitrogen atoms is · Statistical Thermodynamics
148. Q148 — The adsorption of a gas on a solid surface exhibits the following isotherm. Which one of the following · Surface Chemistry
149. Q149 — Isothermal which has fractional coverage, linearly, dependent1 on pressure at low pressures but almost · Surface Chemistry
150. Q150 — A process is carried out at constant volume and at constant entropy. It will be spontaneous if: · Thermodynamics
151. Q151 — The chemical potential of component 1 in a solution of binary mixture is μ₁=μ₁⁰+RT ln p₁, when p₁ is the · Thermodynamics
152. Q152 — The configurations at the two stereocentres in the compound given below are · Stereochemistry

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