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

1. Q1 — The gas commonly used in generating plasma in Inductively Coupled Plasma Atomic Emission Spectroscopy · Analytical Chemistry
2. Q2 — Gel permeantion chromatography can be used to separate which of the following: (1) Lanthanides (2) Alkaline · Analytical Chemistry
3. Q3 — The compound that is antiaromatic is (I) (II) (III) (IV) · General Organic Chemistry
4. Q4 — The increasing order of pKa values of the circled hydrogens in the following compounds is (I) (II) (III) · General Organic Chemistry
5. Q5 — The decreasing order of basicity of the following compounds is (I) (II) (III) (IV) · General Organic Chemistry
6. Q6 — The biosynthetic precursor of abietic acid is · Natural Products
7. Q7 — The amino acid constituents of artificial sweetener given below are · Natural Products
8. Q8 — The mass of metastable ion produced due to decomposition of F₁⁺ in the following mass fragmentation sequence · Organic Spectroscopy
9. Q9 — The major product formed in the following reaction sequence is: · Reagents, Reaction Mechanisms & Named Reactions
10. Q10 — The major product formed in the following reaction sequence is: · Reagents, Reaction Mechanisms & Named Reactions
11. Q11 — The major product formed in the following reaction sequence is: · Reagents, Reaction Mechanisms & Named Reactions
12. Q12 — The major product formed in the following transformation is: · Reagents, Reaction Mechanisms & Named Reactions
13. Q13 — The major product formed in the following reaction is: · Reagents, Reaction Mechanisms & Named Reactions
14. Q14 — The major product for the following reactions is · Reagents, Reaction Mechanisms & Named Reactions
15. Q15 — The products A and B in the following reaction sequence are: · Reagents, Reaction Mechanisms & Named Reactions
16. Q16 — The products A and B in the following reaction sequence are: · Reagents, Reaction Mechanisms & Named Reactions
17. Q17 — The major product of the following reaction is: · Reagents, Reaction Mechanisms & Named Reactions
18. Q18 — The products A and B in the following reaction sequence are · Reagents, Reaction Mechanisms & Named Reactions
19. Q19 — The major product of the following reaction is: · Reagents, Reaction Mechanisms & Named Reactions
20. Q20 — The major product of the following reaction is: · Reagents, Reaction Mechanisms & Named Reactions
21. Q21 — The major product of the following reaction is: · Reagents, Reaction Mechanisms & Named Reactions
22. Q22 — The major product of the following reaction is: · Reagents, Reaction Mechanisms & Named Reactions
23. Q23 — The products A and B in the following reaction sequence are · Reagents, Reaction Mechanisms & Named Reactions
24. Q24 — For an enzyme-substrate reaction, a plot between 1/v and 1/([S₀]) yields a slope of 40 s. If the enzyme · Chemical Kinetics
25. Q25 — For a gaseous reaction, 2 NO(g)+Cl₂(g) → Non-linear T.S. → 2 NOCl, the pre-exponential factor in the rate · Chemical Kinetics
26. Q26 — The rate constant for a reaction A⁺+Bⁿ⁺¹ → P is measured in two different aqueous solutions of ionic · Chemical Kinetics
27. Q27 — The point group symmetries for trans- [Cr(en)₂ F₂]⁺and [TiCl₆]³⁻, respectively, are · Group Theory
28. Q28 — The product σxy · S₄z (S₄z is the four fold improper axis of rotation around the z-axis, and σxy is the · Group Theory
29. Q29 — Identify the speed distribution functions of Ne, Ar, and Kr with the curves in the figure below · Gaseous State
30. Q30 — For a polydispersed macromolecular colloid, osmometry gives · Polymer Chemistry
31. Q31 — A sample experiment revealed that PVC formed in the medium has (Mn)=13, and (Mw)=16, where (Mn) stands for · Polymer Chemistry
32. Q32 — Among the following figures, the variations of mass adsorbs with pressure for a monolayer and a multilayer · Polymer Chemistry
33. Q33 — When T → ∞, value of the single-particle partition function will be (given : degeneracy of level j=gj) : · Statistical Thermodynamics
34. Q34 — The probability of finding the harmonic oscillator in the energy level n=1 is (neglect zero point energy and · Statistical Thermodynamics
35. Q35 — Identify the speed distribution functions of Ne, Ar and Kr with the curves in the figure above: · Statistical Thermodynamics
36. Q36 — The exact differential d f of a state function f(x, y), among the following is · Thermodynamics
37. Q37 — Gel permeantion chromatography can be used to separate which of the following: (A) Lanthanides (B) Alkaline · Analytical Chemistry
38. Q38 — The extent of π-electron conjugation in macrocyclic rings of (1) heme, (2) coenzyme B₁₂ and (3) chlorophyll · Bioinorganic Chemistry
39. Q39 — The number of histidine amino acid nitrogen atoms coordinated to bimetallic active site of oxyhemocyanin, and · Bioinorganic Chemistry
40. Q40 — Identify correct statements for mercury as an environment pollutant. A. Carbanionicbiomethylation converts it · Bioinorganic Chemistry
41. Q41 — Under physiological condition, oxygen is binding to deoxyhemoglobin and deoxymyoglobin, the binding curve and · Bioinorganic Chemistry
42. Q42 — Match the metalloproteins in Column-A with their function in Column-B The correct answer is · Bioinorganic Chemistry
43. Q43 — The correct schematic molecular energy diagram for SF₆ molecule is: · Chemical Bonding
44. Q44 — The δ-bond is formed via the overlap of · Chemical Bonding
45. Q45 — For the oxidation state(s) of Sulphur atoms in S₂O, consider the following A. -2 and +4 B. 0 and +2 C. +4 and · Chemical Bonding
46. Q46 — The geometries of [Br₃]⁺and [I₅]⁺respectively, are · Chemical Bonding
47. Q47 — The S and L values for ¹⁵N atom respectively, are · Coordination Chemistry
48. Q48 — In the following reaction [PtCl₄]²⁻+NO₂⁻, is → A+NH₃ → B, compound B is · Coordination Chemistry
49. Q49 — The number of stereoisomers of trans- [CoCl₂(triethylenetetraamine)]Br is · Coordination Chemistry
50. Q50 — An aqueous solution of [Mn (H₂ O)₆]²⁺ complex is pale pink in colour. The probable reasons for it are (A) · Coordination Chemistry
51. Q51 — Base hydrolysis of [CoCl (NH₃)₅]²⁺ is an overall second order reaction, whereas that of [Co(CN)]³⁻ is of · Coordination Chemistry
52. Q52 — The configuration [Ne] 2p¹3p¹ has a ³D term. Its levels are · Coordination Chemistry
53. Q53 — The spin-only magnetic moment and the spectroscopic ground state term symbol of manganese center in [MnF₆]³⁻ · Coordination Chemistry
54. Q54 — The three dimensional structure of compound [Co (Co (NH₃)₄(OH)₂)₃] Br₆, has · Coordination Chemistry
55. Q55 — The spin-only and spin plus orbital magnetic moments of [CrCl₆]³⁻ are · Coordination Chemistry
56. Q56 — EPR spectrum of a free radical containing nuclei with nonzero nuclear spin is obtained if the following · Inorganic Spectroscopy
57. Q57 — The correct order of the retention of cations on a sulfonated cation exchange resin column is · Lanthanides and Actinides
58. Q58 — Hindered β-diketonates like dpmH(dpmH= dipivaloylmethane) are used for the separation of lanthanides because · Lanthanides and Actinides
59. Q59 — The reaction between SbF₅ and two equivalents of HF leads to the formation of · Main Group Elements
60. Q60 — Among F⁻, Na⁺, O²⁻ and Mg²⁺ ions, those having the highest and the lowest ionic radii respectively are · Main Group Elements
61. Q61 — The reaction between diphenyldichlorosilane and water in 1: 2 molar ratio gives product A which on heating · Main Group Elements
62. Q62 — A borane (X) is reacted with ammonia to give a salt of borohydride (Y). The ¹¹B NMR spectrum of Y consists of · Main Group Elements
63. Q63 — 12-Crown-4 binds with the alkali metal ions in the following order : Li⁺ Na⁺>K⁺>Cs⁺. It is due to the · Main Group Elements
64. Q64 — The main products of the reaction of equimolar quantities of XeF₆ with NaNO₃ are · Main Group Elements
65. Q65 — The hepticities 'x' and 'y' of the arene moieties in the diamagnetic complex [ (ηx-C₆ H₆) Ru (ηy-C₆ H₆)] · Organometallic Compounds
66. Q66 — The rate of the reaction Ni(CO)₄+PPh₃ Δ [Ni(CO)₃ (PPh₃)]+CO depends on · Organometallic Compounds
67. Q67 — The product of the reaction of propene, CO and H₂ in the presence of Co₂(CO)₈ as a catalyst is · Organometallic Compounds
68. Q68 — Co₄(CO)₁₂ adopts the · Organometallic Compounds
69. Q69 — Reductive elimination step in hydrogenation of alkenes by Wilkinson catalyst results in (neglecting solvent · Organometallic Compounds
70. Q70 — Na [ (η⁵-C₅H₅)Fe(CO)₂] reacts with Br₂ to give A. Reaction of A with LiAlH₄ results in B. The proton NMR · Organometallic Compounds
71. Q71 — The compound that undergoes oxidative addition reaction in presence of H₂, is · Organometallic Compounds
72. Q72 — ¹H NMR spectrum of free benzene shows a peak at -7.2 ppm. The expected chemical shift (in ppm) of C₆H₆ ligand · Organometallic Compounds
73. Q73 — According to Wade's rule, anion C₂ B₉ H₁₂ adopts · Organometallic Compounds
74. Q74 — The final product in the reaction of [Cp*₂ThH] with CO in an equimolar ratio is · Organometallic Compounds
75. Q75 — Complexes HM(CO)₅ and [ (η⁵-C₅ H₅) M′(CO)₃]₂ obey the 18-electron rule. Identify M and M′ and their ¹H NMR · Organometallic Compounds
76. Q76 — In the IR spectrum, the absorption band due to carbonyl group in phenyl acetate appears at · Organic Spectroscopy
77. Q77 — A compound with molecular formula C₄ H₆ O₂ shows band at 1770 cm⁻¹ in IR spectrum and peaks at 178,68,28 and · Organic Spectroscopy
78. Q78 — The mass of metastable ion produced due to decomposition of F₁ ⁺ in the following mass fragmentation sequence · Organic Spectroscopy
79. Q79 — The ratio of the relative intensities of the carbon signals in the first order ¹³ C NMR spectrum of CD₃ Cl is · Organic Spectroscopy
80. Q80 — The following reactions give a product (racemic) which exhibits the following NMR data: ¹ H ~ NMR: δ 2.67(2H · Organic Spectroscopy
81. Q81 — An organic compound having molecular formula C ₁₀ H₁₂ O₂ exhibits the following spectral data: IR: 3400 (br) · Organic Spectroscopy
82. Q82 — The major product of the following reaction is · Pericyclic Reactions
83. Q83 — The cyclic product(s) of the following photochemical reaction is(are) · Photochemical Reactions
84. Q84 — Identify the speed distribution functions of Ne, Ar, and Kr with the curves in the figure below 1 · Atomic and Molecular Term Symbol
85. Q85 — For an enzyme-substrate reaction, a plot between 1 / v and 1 / [S₀] yields a slope of 40 s. If the enzyme · Chemical Kinetics
86. Q86 — The rate constant for a reaction A³⁺+Bⁿ⁺¹ → P is measured in two different aqueous solutions of ionic · Chemical Kinetics
87. Q87 — A reaction A+B+C → D follows the mechanism A+B ⇌ AB AB+C → D in which first step remains essentially in · Chemical Kinetics
88. Q88 — Which of the following will result in deviation from Beer's law ? 1. Change in refractive index or medium. 2 · Chemical Kinetics
89. Q89 — For the cell reaction, Sn(s)+Sn⁴⁺(aq) 2 Sn²⁺(aq), separate electrode reactions could be written with the · Electrochemistry
90. Q90 — Fuel cells provide clean electrical energy to a variety of applications including automobiles and stationary · Electrochemistry
91. Q91 — The point group symmetries for trans- [Cr(en)₂ F₂]+ and [TiCl 6]³⁻, respectively, are · Group Theory
92. Q92 — The character table of C2 v point group is given below. In cis-butadiene molecule the vibrational modes · Group Theory
93. Q93 — The product σxy. S₄z (S₄z. is the four fold improper axis of rotation around the z-axis, and σxy is the · Group Theory
94. Q94 — Bond lengths of homonuclear diatomic molecules can be determined with the help of both · Molecular Spectroscopy
95. Q95 — If the component of the orbital angular momentum along the molecular axis of a heteronuclear diatomic · Molecular Spectroscopy
96. Q96 — If the bond length of a heteronuclear diatomic molecule is greater in the upper vibrational state, the gap · Molecular Spectroscopy
97. Q97 — The fraction of groups condensed at time in any stepwise condensation polymerization (overall second order) · Polymer Chemistry
98. Q98 — For a polydispersed macromolecular colloid, osmometry gives · Polymer Chemistry
99. Q99 — Among the following figures, the variations of mass adsorbs with pressure for a monolayer and a multilayer · Polymer Chemistry
100. Q100 — X-ray diffraction does not give any structural information for · Solid State Chemistry
101. Q101 — A solid consisting of only X-atoms has a close-packed structure with X-X distance of 160 pm. Assuming it to · Solid State Chemistry
102. Q102 — The low and high temperature limits of vibrational partition function are (θ=h v / k) : · Statistical Thermodynamics
103. Q103 — The number of microstates that are possible, when two particles are distributed in four states such that the · Statistical Thermodynamics
104. Q104 — When T → ∞, value of the single-particle partition function will be (given : degeneracy of level j=gj) : · Statistical Thermodynamics
105. Q105 — The probability of finding the harmonic oscillator in the energy level n=1 is (neglect zero point energy and · Statistical Thermodynamics
106. Q106 — Identify the speed distribution functions of Ne, Ar and Kr with the curves in the figure above: · Statistical Thermodynamics
107. Q107 — Hydrogen is adsorbed on many metal surfaces by dissociation (S represents a surface site)- If the pressure of · Surface Chemistry
108. Q108 — For a process in a closed system, temperature is equal to · Thermodynamics
109. Q109 — The exact differential df of a state function f(x, y), among the following is · Thermodynamics
110. Q110 — Given the following two relations, x₁ d μ₁+x₂ d μ₂=0 And x₁ d V₁+x₂ d V₂=0 for a binary liquid mixture at · Thermodynamics
111. Q111 — At high pressure, the fugacity coefficient of a real gas is greater than one, because · Thermodynamics

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