This online mock test covers the following chemistry practice questions with bilingual explanations, negative marking schemes, and interactive CBT interface. Students searching for these topics can practice the complete test online with real-time timers:

1. In the reactions (A) and (B), CSIR NET June 2012 | Q21 | Inorganic Chemistry / Acid-Base Behavior of Water
   प्रश्न संख्या 21: In the reactions (A) and (B),
2. The correct structure of basic beryllium nitrate is: CSIR NET June 2012 | Q23 | Inorganic Clusters / Basic Beryllium Nitrate Structure
   प्रश्न संख्या 23: The correct structure of basic beryllium nitrate is:
3. The total number of lone pairs of electrons in I3- is: CSIR NET June 2012 | Q24 | Chemical Bonding & VSEPR / Total Lone Pairs in Triiodide Ion
   प्रश्न संख्या 24: The total number of lone pairs of electrons in I3- is:
4. The spectrophotometric response for the titration of a mixture of Fe 3 + and Cu 2 + ions against EDTA CSIR NET June 2012 | Q26 | Analytical Chemistry / Spectrophotometric Titration of Fe(III) and Cu(II)
   प्रश्न संख्या 26: The spectrophotometric response for the titration of a mixture of Fe 3 + and Cu 2 + ions against EDTA
5. The actual base pairs present in the double helical structure of DNA containing adenine (A), thymine CSIR NET June 2012 | Q28 | Bio-organic Chemistry / Watson-Crick Base Pairing in DNA
   प्रश्न संख्या 28: The actual base pairs present in the double helical structure of DNA containing adenine (A), thymine
6. The oxidation state of iron in met-hemoglobin is CSIR NET June 2012 | Q29 | Bioinorganic Chemistry / Oxidation State of Iron in Met-Hemoglobin
   प्रश्न संख्या 29: The oxidation state of iron in met-hemoglobin is
7. The reactions of Ni ( CO )4 with the ligand ( L = PMe 3 or P ( OMe ) 3 ) L yields Ni ( CO )3 L. TheThe CSIR NET June 2012 | Q30 | Organometallic Mechanisms / Dissociative Substitution in Ni(CO)4
   प्रश्न संख्या 30: The reactions of Ni ( CO )4 with the ligand ( L = PMe 3 or P ( OMe ) 3 ) L yields Ni ( CO )3 L. TheThe
8. For the reaction, trans- ⌈ ⌊ IrCl ( CO )( PPh 3 ) 2 ⌉ ⌋ + Cl 2 → trans - ⌈ ⌊ IrCl 3 ( CO )( Phh 3 ) 2 ⌉ ⌋, the correct CSIR NET June 2012 | Q34 | Organometallics / Vaska Complex Oxidative Addition of Chlorine
   प्रश्न संख्या 34: For the reaction, trans- ⌈ ⌊ IrCl ( CO )( PPh 3 ) 2 ⌉ ⌋ + Cl 2 → trans - ⌈ ⌊ IrCl 3 ( CO )( Phh 3 ) 2 ⌉ ⌋, the correct
9. The nucleophilic attack on olefins under mild conditions: CSIR NET June 2012 | Q35 | Organometallics / Transition Metal Activation of Olefins
   प्रश्न संख्या 35: The nucleophilic attack on olefins under mild conditions:
10. The least basic among the following is: CSIR NET June 2012 | Q37 | Inorganic Chemistry / Lanthanide Contraction & Basicity of Hydroxides
    प्रश्न संख्या 37: The least basic among the following is:
11. For any operator A and its adjoint A †, the INCORRECT statement is: (a) AA † is hermitian (b) AA † + A † A is hermitian. CSIR NET June 2012 | Q38 | Quantum Mechanics / Properties of Adjoint and Hermitian Operators
    प्रश्न संख्या 38: For any operator A and its adjoint A †, the INCORRECT statement is: (a) AA † is hermitian (b) AA † + A † A is hermitian.
12. For hydrogen-like atom with a nuclear charge Z, the energy of orbital with principal quantum num- CSIR NET June 2012 | Q39 | Atomic Structure / Bohr Energy Formula for Hydrogen-like Atoms
    प्रश्न संख्या 39: For hydrogen-like atom with a nuclear charge Z, the energy of orbital with principal quantum num-
13. The average (a) a0 CSIR NET June 2012 | Q40 | Quantum Mechanics / Expectation Value of Radius in Hydrogen 1s
    प्रश्न संख्या 40: The average (a) a0
14. Among the following, the CORRECT statement is: CSIR NET June 2012 | Q41 | Group Theory / Great Orthogonality Theorem & Irreducible Representations
    प्रश्न संख्या 41: Among the following, the CORRECT statement is:
15. For the vibrational Raman spectrum of a homonuclear diatomic molecule, the selection rule under CSIR NET June 2012 | Q43 | Molecular Spectroscopy / Vibrational Raman Selection Rules
    प्रश्न संख्या 43: For the vibrational Raman spectrum of a homonuclear diatomic molecule, the selection rule under
16. With increase in temperature, the Gibbs free energy for the adsorption of a gas on to a solid surface CSIR NET June 2012 | Q44 | Surface Chemistry / Temperature Effect on Adsorption Gibbs Free Energy
    प्रश्न संख्या 44: With increase in temperature, the Gibbs free energy for the adsorption of a gas on to a solid surface
17. The vapour of a pure substance, when cooled under a pressure less than its triple-piont pressure, CSIR NET June 2012 | Q45 | Thermodynamics / Phase Transitions Below Triple Point Pressure
    प्रश्न संख्या 45: The vapour of a pure substance, when cooled under a pressure less than its triple-piont pressure,
18. The quantities, which are held fixed in a canonical ensemble are CSIR NET June 2012 | Q46 | Statistical Mechanics / Canonical Ensemble Thermodynamic Variables
    प्रश्न संख्या 46: The quantities, which are held fixed in a canonical ensemble are
19. The correct value of Eº, of a half cell in the following graph of E vs log m(molality) is: CSIR NET June 2012 | Q47 | Electrochemistry / Determination of Standard Half-Cell Potential E°
    प्रश्न संख्या 47: The correct value of Eº, of a half cell in the following graph of E vs log m(molality) is:
20. One of the assumptions made in the conventional activated complex theory is: CSIR NET June 2012 | Q48 | Chemical Kinetics / Activated Complex Theory Postulates
    प्रश्न संख्या 48: One of the assumptions made in the conventional activated complex theory is:
21. For a reaction, the rate constant k at 27ºC was found to be k = 5.4 × CSIR NET June 2012 | Q49 | Chemical Kinetics / Arrhenius Activation Energy Determination
    प्रश्न संख्या 49: For a reaction, the rate constant k at 27ºC was found to be k = 5.4 ×
22. During the addition polymerisation, the reaction proceeds via CSIR NET June 2012 | Q50 | Polymer Chemistry / Addition Polymerization Chain Mechanism
    प्रश्न संख्या 50: During the addition polymerisation, the reaction proceeds via
23. How many atoms are there in an element packed in a fcc structure CSIR NET June 2012 | Q51 | Solid State / Number of Atoms per Unit Cell in FCC Lattice
    प्रश्न संख्या 51: How many atoms are there in an element packed in a fcc structure
24. The structure obtained when all the tetrahedral holes are occupied in a fcc structure is of the type CSIR NET June 2012 | Q52 | Solid State / Tetrahedral Holes Filling in FCC Lattice (Fluorite)
    प्रश्न संख्या 52: The structure obtained when all the tetrahedral holes are occupied in a fcc structure is of the type
25. (a) NaCl Dispersion (b) CsCl of a solid in a liquid, a liquid in a (c) gas CaFand 2 a liquid in a liquid (d) ZnS CSIR NET June 2012 | Q53 | Colloid Chemistry / Colloidal Dispersions Nomenclature
    प्रश्न संख्या 53: (a) NaCl Dispersion (b) CsCl of a solid in a liquid, a liquid in a (c) gas CaFand 2 a liquid in a liquid (d) ZnS
26. The Experiment Mean data obtained from A 50 two units sets of experiments B CSIR NET June 2012 | Q54 | Analytical Chemistry / Statistical Comparison of Precision & Variance
    प्रश्न संख्या 54: The Experiment Mean data obtained from A 50 two units sets of experiments B
27. The IUPAC name of the compound given below is: CSIR NET June 2012 | Q55 | Organic Nomenclature / IUPAC Naming of Chiral Cyclohexenones
    प्रश्न संख्या 55: The IUPAC name of the compound given below is:
28. The major product formed in the following reaction is: CSIR NET June 2012 | Q56 | Organic Synthesis / Intramolecular Alkylation with NaH
    प्रश्न संख्या 56: The major product formed in the following reaction is:
29. The number of signals that appear in the broadband decoupled 13C NMR spectrum of phenan- CSIR NET June 2012 | Q57 | Organic Spectroscopy / 13C NMR Symmetry Signals of Polyaromatics
    प्रश्न संख्या 57: The number of signals that appear in the broadband decoupled 13C NMR spectrum of phenan-
30. The co-enzyme that is involved in the reduction of a double bond in fatty acid bisynthesis is: (a) NADH (b) Biotin CSIR NET June 2012 | Q58 | Biochemistry / Co-enzyme in Fatty Acid Biosynthesis
    प्रश्न संख्या 58: The co-enzyme that is involved in the reduction of a double bond in fatty acid bisynthesis is: (a) NADH (b) Biotin
31. Epoxidation of (R)-cyclohex-2-enol CSIR NET June 2012 | Q59 | Stereochemistry / Diastereoselective Epoxidation of Chiral Allylic Alcohols
    प्रश्न संख्या 59: Epoxidation of (R)-cyclohex-2-enol
32. The major product formed in the following concerted reaction is CSIR NET June 2012 | Q60 | Pericyclic Reactions / Concerted Electrocyclic Ring Closure
    प्रश्न संख्या 60: The major product formed in the following concerted reaction is
33. The structure of meso-tricarboxylic acid that is formed on potassium permanganate oxidation of CSIR NET June 2012 | Q61 | Natural Products / Meso-Tricarboxylic Acid from Abietic Acid
    प्रश्न संख्या 61: The structure of meso-tricarboxylic acid that is formed on potassium permanganate oxidation of
34. The major product formed in the following reaction is: CSIR NET June 2012 | Q62 | Organic Reactions / Halogenation of Cyclic Enones in Methanol
    प्रश्न संख्या 62: The major product formed in the following reaction is:
35. The major product formed in the following reaction is: CSIR NET June 2012 | Q63 | Organic Synthesis / Epoxidation and Trans-Diaxial Ring Opening
    प्रश्न संख्या 63: The major product formed in the following reaction is:
36. Among the following, the synthetic equivalent for acyl anion is: CSIR NET June 2012 | Q64 | Organic Synthesis / Umpolung & Synthetic Equivalents of Acyl Anion
    प्रश्न संख्या 64: Among the following, the synthetic equivalent for acyl anion is:
37. Among the following, the compound that undergoes deprotection easily on treatment with hydrogen CSIR NET June 2012 | Q65 | Organic Synthesis / Deprotection of Benzyl Carbamates (Cbz)
    प्रश्न संख्या 65: Among the following, the compound that undergoes deprotection easily on treatment with hydrogen
38. Among the following, the amino acid which is basic in nature is: CSIR NET June 2012 | Q66 | Bio-organic Chemistry / Basic Amino Acids & Side Chains
    प्रश्न संख्या 66: Among the following, the amino acid which is basic in nature is:
39. “Phosphorescence” is represented as CSIR NET June 2012 | Q67 | Photochemistry / Jablonski Diagram & Phosphorescence Mechanism
    प्रश्न संख्या 67: “Phosphorescence” is represented as
40. Among the following diacids, the one that forms an anhydride fastest on heating with acetic anhy- CSIR NET June 2012 | Q68 | Organic Reactions / Anhydride Formation from Cyclic Dicarboxylic Acids
    प्रश्न संख्या 68: Among the following diacids, the one that forms an anhydride fastest on heating with acetic anhy-
41. The major product formed in the following reaction sequence is: CSIR NET June 2012 | Q69 | Organic Synthesis / Birch Reduction followed by Epoxidation
    प्रश्न संख्या 69: The major product formed in the following reaction sequence is:
42. In the 400 MHz 1H NMR spectrum, of organic compound exhibited a doublet. The two lines of the CSIR NET June 2012 | Q70 | Organic Spectroscopy / 1H NMR Coupling Constant Calculation (J value)
    प्रश्न संख्या 70: In the 400 MHz 1H NMR spectrum, of organic compound exhibited a doublet. The two lines of the
43. The strength of p π - d π bonding in E–O (E = Si, P, S and Cl) follows the order CSIR NET June 2012 | Q71 | Chemical Bonding / p(pi)-d(pi) Bonding Strength in Group 14-17 Oxides
    प्रश्न संख्या 71: The strength of p π - d π bonding in E–O (E = Si, P, S and Cl) follows the order
44. In the following reactions carried out Zn ( NH 2 ) 2 + 2KNH 2 in --→ liquid K 2 ⌈ ⌊ NHZn 3( . CSIR NET June 2012 | Q72 | Inorganic Chemistry / Liquid Ammonia Solvo-Acids and Solvo-Bases
    प्रश्न संख्या 72: In the following reactions carried out Zn ( NH 2 ) 2 + 2KNH 2 in --→ liquid K 2 ⌈ ⌊ NHZn 3( .
45. The pair of lanthanides with the highest third-ionization energy is: CSIR NET June 2012 | Q73 | f-Block Chemistry / Third Ionization Energies of Lanthanides (Eu, Yb)
    प्रश्न संख्या 73: The pair of lanthanides with the highest third-ionization energy is:
46. The lanthanide(III) ion having the highest partition coefficient between tri-n-butylphosphate and CSIR NET June 2012 | Q74 | f-Block Chemistry / Solvent Extraction of Lanthanides with TBP
    प्रश्न संख्या 74: The lanthanide(III) ion having the highest partition coefficient between tri-n-butylphosphate and
47. The quantitative determination of N2H4 with KIO3 proceeds in a mixture of H2O/CCl4 as follows CSIR NET June 2012 | Q75 | Analytical Chemistry / Andrews Titration of Hydrazine with Iodate
    प्रश्न संख्या 75: The quantitative determination of N2H4 with KIO3 proceeds in a mixture of H2O/CCl4 as follows
48. Among the (a) A and B halides, NCl(b) 3(A), A and PClC 3(B) and AsCl(c) 3(C), B and those C which produce two different (d) A, B and C CSIR NET June 2012 | Q76 | Main Group Chemistry / Hydrolysis of Non-metal Chlorides
    प्रश्न संख्या 76: Among the (a) A and B halides, NCl(b) 3(A), A and PClC 3(B) and AsCl(c) 3(C), B and those C which produce two different (d) A, B and C
49. The decreasing order of dipole moment of molecules is CSIR NET June 2012 | Q77 | Molecular Structure / Dipole Moments of Polar Diatomics & Triatomics
    प्रश्न संख्या 77: The decreasing order of dipole moment of molecules is
50. The cluster having arachno type structure is: CSIR NET June 2012 | Q78 | Inorganic Clusters / Polyhedral Skeletal Electron Pair Theory (PSEPT)
    प्रश्न संख्या 78: The cluster having arachno type structure is:
51. The carbonyl resonance in 13C NMR spectrum of ⌈ ⌊ ( η 5 CSIR NET June 2012 | Q79 | Inorganic Spectroscopy / 13C and 103Rh Coupling in Rhodium Carbonyls
    प्रश्न संख्या 79: The carbonyl resonance in 13C NMR spectrum of ⌈ ⌊ ( η 5
52. Low oxidation state complexes are often air-sensitive, but are rarely water sensitive because CSIR NET June 2012 | Q80 | Organometallics / Air vs Water Sensitivity of Low-Valent Complexes
    प्रश्न संख्या 80: Low oxidation state complexes are often air-sensitive, but are rarely water sensitive because
53. The metal complex that exhibits a triplet as well as doublet in its 31P NMR spectrum is CSIR NET June 2012 | Q81 | Inorganic Spectroscopy / 31P NMR of Meridional vs Facial Ir(III)
    प्रश्न संख्या 81: The metal complex that exhibits a triplet as well as doublet in its 31P NMR spectrum is
54. The complex that DOES NOT obey 18- electron rule is: CSIR NET June 2012 | Q82 | Organometallics / Electron Counting & 18-Electron Rule Violations
    प्रश्न संख्या 82: The complex that DOES NOT obey 18- electron rule is:
55. The number of spin-allowed ligand field transitions for octahedral Ni(II) complexes with 3 CSIR NET June 2012 | Q83 | Coordination Chemistry / Tanabe-Sugano & Ligand Field Transitions of Ni(II)
    प्रश्न संख्या 83: The number of spin-allowed ligand field transitions for octahedral Ni(II) complexes with 3
56. The correct structure of P 4 S 3 is: CSIR NET June 2012 | Q84 | Main Group Chemistry / Structure & Bonding in Phosphorus Sulfides (P4S3)
    प्रश्न संख्या 84: The correct structure of P 4 S 3 is:
57. The final product of the reaction ⌈ ⌊ Mn ( CO )6 ⌉ ⌋ + + MeLi CSIR NET June 2012 | Q85 | Organometallics / Nucleophilic Attack on Coordinated Carbonyls by MeLi
    प्रश्न संख्या 85: The final product of the reaction ⌈ ⌊ Mn ( CO )6 ⌉ ⌋ + + MeLi
58. The reaction that yields Li \[ AlH 4 \] is: CSIR NET June 2012 | Q86 | Inorganic Synthesis / Industrial Preparation of Lithium Aluminium Hydride
    प्रश्न संख्या 86: The reaction that yields Li \[ AlH 4 \] is:
59. The number of microstates for d5 electron configuration is: CSIR NET June 2012 | Q87 | Atomic Structure / Number of Microstates for d5 Configuration
    प्रश्न संख्या 87: The number of microstates for d5 electron configuration is:
60. The carbon-14 activity of an old wood sample is found to be 14.2 disintegrations min–1g–1. Calculate CSIR NET June 2012 | Q88 | Nuclear Chemistry / Radiocarbon Dating Half-life & Activity Decay
    प्रश्न संख्या 88: The carbon-14 activity of an old wood sample is found to be 14.2 disintegrations min–1g–1. Calculate
61. The reaction 3 ⌈ ⌊ Rh 4 ( CO ) 12 ⌉ ⌋ → 2 ⌈ ⌊ Rh 6 ( CO ) 16 ⌉ ⌋ + 4CO \[25ºC, 500 atm CO\] is: CSIR NET June 2012 | Q89 | Organometallics / Thermal Decarbonylation & Cluster Condensation
    प्रश्न संख्या 89: The reaction 3 ⌈ ⌊ Rh 4 ( CO ) 12 ⌉ ⌋ → 2 ⌈ ⌊ Rh 6 ( CO ) 16 ⌉ ⌋ + 4CO \[25ºC, 500 atm CO\] is:
62. A column is packed with 0.5 g of a strongly acidic ion exchange resin in H+ form. A 1.0 M NaCl solution is passed through the column until the eluant coming out becomes neutral. The collected eluant is completely neutralized by 17 ml. of 0.5 M NaOH. The ion exchange capacity of the resin is: (a) 1.00 meq/g (b) 1.25 meq/g (c) 1.50 meq/g (d) 1.75 meq/g CSIR NET June 2012 | Q90 | Analytical Chemistry / Cation-Exchange Resin Capacity Determination
    प्रश्न संख्या 90: A column is packed with 0.5 g of a strongly acidic ion exchange resin in H+ form. A 1.0 M NaCl solution is passed through the column until the eluant coming out becomes neutral. The collected eluant is completely neutralized by 17 ml. of 0.5 M NaOH. The ion exchange capacity of the resin is: (a) 1.00 meq/g (b) 1.25 meq/g (c) 1.50 meq/g (d) 1.75 meq/g
63. The molar extinction coefficient of B (MW = 180) is 4×103 lit mol–1 cm–1. One liter solution of C which contains 0.1358 g pharmaceutical preparation of B, shows an absorbance of 0.411 in a 1 cm quartz (a) 10.20 cell. The percentage CSIR NET June 2012 | Q91 | Analytical Chemistry / Beer-Lambert Law Pharmaceutical Analysis
    प्रश्न संख्या 91: The molar extinction coefficient of B (MW = 180) is 4×103 lit mol–1 cm–1. One liter solution of C which contains 0.1358 g pharmaceutical preparation of B, shows an absorbance of 0.411 in a 1 cm quartz (a) 10.20 cell. The percentage
64. The changes (from A-D given below) which occur (A) One iron atoms is oxidized CSIR NET June 2012 | Q92 | Bioinorganic Chemistry / Hemerythrin Oxygen Binding Mechanism
    प्रश्न संख्या 92: The changes (from A-D given below) which occur (A) One iron atoms is oxidized
65. In photosynthetic systems the redox metalloproteins involved in electron transfer are cytochrome CSIR NET June 2012 | Q93 | Bioinorganic Chemistry / Electron Transport Pathway in Photosynthesis
    प्रश्न संख्या 93: In photosynthetic systems the redox metalloproteins involved in electron transfer are cytochrome
66. The total numbers of fine and hyperfine EPR lines expected for octahedral high-spin Mn(II) com- CSIR NET June 2012 | Q94 | EPR Spectroscopy / Hyperfine Splitting in High-Spin Octahedral Mn(II)
    प्रश्न संख्या 94: The total numbers of fine and hyperfine EPR lines expected for octahedral high-spin Mn(II) com-
67. The Mossbauer spectra of two iron complexes are shown below. They may arise from (i) high-spin CSIR NET June 2012 | Q95 | Mossbauer Spectroscopy / High-Spin vs Low-Spin Iron Quadrupole Splitting
    प्रश्न संख्या 95: The Mossbauer spectra of two iron complexes are shown below. They may arise from (i) high-spin
68. The probability of finding the particle in a one dimensional box of length ‘L’ in the region between CSIR NET June 2012 | Q96 | Quantum Mechanics / 1D Particle in Box Probability in Central Half
    प्रश्न संख्या 96: The probability of finding the particle in a one dimensional box of length ‘L’ in the region between
69. A particle in three dimensional cubic box of length L has energy of CSIR NET June 2012 | Q97 | Quantum Mechanics / Degeneracy in 3D Cubic Box Energy Levels
    प्रश्न संख्या 97: A particle in three dimensional cubic box of length L has energy of
70. The following are the three statements about perturbation theory CSIR NET June 2012 | Q98 | Quantum Mechanics / Second-Order Perturbation Energy Corrections
    प्रश्न संख्या 98: The following are the three statements about perturbation theory
71. Using Hückel molecular orbital approximation, the two roots of secular equation of ethene are CSIR NET June 2012 | Q99 | Quantum Chemistry / Huckel MO Secular Determinant Roots for Ethene
    प्रश्न संख्या 99: Using Hückel molecular orbital approximation, the two roots of secular equation of ethene are
72. For H2 molecule in the excited state σ 1 g σ 1 CSIR NET June 2012 | Q100 | Quantum Chemistry / Triplet State Spin Wavefunctions for H2 Molecule
    प्रश्न संख्या 100: For H2 molecule in the excited state σ 1 g σ 1
73. A square pyramidal, MX4, molecule belongs to C4V point group. The symmetry operations are: E, 2C 4 , C 2 , 2 σ v and 2 σ d . The trace for the reducible representation, when symmetry operations of C4V applied to MX(a) 5 1 1 1 3 4, is: CSIR NET June 2012 | Q101 | Group Theory / Representation Characters for Square Pyramidal MX4
    प्रश्न संख्या 101: A square pyramidal, MX4, molecule belongs to C4V point group. The symmetry operations are: E, 2C 4 , C 2 , 2 σ v and 2 σ d . The trace for the reducible representation, when symmetry operations of C4V applied to MX(a) 5 1 1 1 3 4, is:
74. Character table of C2v point group is: CSIR NET June 2012 | Q102 | Group Theory / Transition Dipole Moment & Polarization Selection Rules
    प्रश्न संख्या 102: Character table of C2v point group is:
75. Using cuvettcs of 0.5 cm path length, a 10–4 M solution of a chromophore shows 50% transmittance at certain wave length. The molar extinction coefficient of the chromophore at this wave length is (log 2 = 0.301) (a) 1500 M–1 cm–1 (b) 3010 M–1 cm–1 (c) 5000 M–1 cm–1 (d) 6020 M–1 cm–1. CSIR NET June 2012 | Q103 | Physical Spectroscopy / Molar Absorptivity Calculation from Transmittance
    प्रश्न संख्या 103: Using cuvettcs of 0.5 cm path length, a 10–4 M solution of a chromophore shows 50% transmittance at certain wave length. The molar extinction coefficient of the chromophore at this wave length is (log 2 = 0.301) (a) 1500 M–1 cm–1 (b) 3010 M–1 cm–1 (c) 5000 M–1 cm–1 (d) 6020 M–1 cm–1.
76. The set of allowed electronic transitions among the following is: CSIR NET June 2012 | Q104 | Molecular Spectroscopy / Electronic Selection Rules for Diatomics
    प्रश्न संख्या 104: The set of allowed electronic transitions among the following is:
77. The following data were obtained from the vibrational fine structure in the vibronic spectrum of a CSIR NET June 2012 | Q105 | Molecular Spectroscopy / Morse Potential & Spectroscopic Dissociation Energy
    प्रश्न संख्या 105: The following data were obtained from the vibrational fine structure in the vibronic spectrum of a
78. An ideal gas was subjected to a reversible, adiabatic, expansion and then its initial volume was restored by a reversible, isothermal compression. If ‘q’ denotes the heat added to the system and ‘w’ the work done by the system, then (a) w \< 0, q \ 0, q \< 0 (c) w \ 0 (d) w \> 0, q \> 0 CSIR NET June 2012 | Q106 | Thermodynamics / Reversible Adiabatic Expansion followed by Isothermal
    प्रश्न संख्या 106: An ideal gas was subjected to a reversible, adiabatic, expansion and then its initial volume was restored by a reversible, isothermal compression. If ‘q’ denotes the heat added to the system and ‘w’ the work done by the system, then (a) w \< 0, q \ 0, q \< 0 (c) w \ 0 (d) w \> 0, q \> 0
79. The gas phase reaction 2NO 2 ( g ) → NO 2 4 ( g ) is an exothermic process. It an equilibrium mixture CSIR NET June 2012 | Q107 | Chemical Equilibrium / Le Chatelier Principle on N2O4 Dimerization
    प्रश्न संख्या 107: The gas phase reaction 2NO 2 ( g ) → NO 2 4 ( g ) is an exothermic process. It an equilibrium mixture
80. Indicate which one of the following relations is NOT correct. CSIR NET June 2012 | Q108 | Chemical Thermodynamics / Maxwell Relations & Cross Derivatives
    प्रश्न संख्या 108: Indicate which one of the following relations is NOT correct.
81. The energy levels of the harmonic oscillator (neglecting zero point energy) are ε v = nh ν for n = 0, 1, CSIR NET June 2012 | Q109 | Statistical Thermodynamics / Harmonic Oscillator Partition Function
    प्रश्न संख्या 109: The energy levels of the harmonic oscillator (neglecting zero point energy) are ε v = nh ν for n = 0, 1,
82. The correct entropy for 6 identical particles with their occupation number {0, 1, 2, 3} in four states CSIR NET June 2012 | Q110 | Statistical Thermodynamics / Boltzmann Entropy of Multi-State Systems
    प्रश्न संख्या 110: The correct entropy for 6 identical particles with their occupation number {0, 1, 2, 3} in four states
83. The correct Nernst equation for the concentration cell: CSIR NET June 2012 | Q111 | Electrochemistry / Concentration Cell EMF without Liquid Junction
    प्रश्न संख्या 111: The correct Nernst equation for the concentration cell:
84. Main assumption(s) involved in the derivation of Debye-Hückel equation is(are) the validity of CSIR NET June 2012 | Q112 | Electrochemistry / Debye-Huckel Limiting Law Assumptions
    प्रश्न संख्या 112: Main assumption(s) involved in the derivation of Debye-Hückel equation is(are) the validity of
85. In the base (OH–) hydrolysis of a transition metal complex \[ ML 6 \]Z CSIR NET June 2012 | Q113 | Coordination Kinetics / Primary Salt Effect on Base Hydrolysis Rates
    प्रश्न संख्या 113: In the base (OH–) hydrolysis of a transition metal complex \[ ML 6 \]Z
86. The rate law for one of the mechanism of the pyrolysis of CH 3 CHO at 520ºC and 0.2 bar is CSIR NET June 2012 | Q114 | Chemical Kinetics / Rice-Herzfeld Pyrolysis Mechanism Activation Energy
    प्रश्न संख्या 114: The rate law for one of the mechanism of the pyrolysis of CH 3 CHO at 520ºC and 0.2 bar is
87. In the Michaelis-Menten mechanism for enzyme kinetics, the expression obtained is: CSIR NET June 2012 | Q115 | Enzyme Kinetics / Michaelis-Menten Kinetic Parameters Determination
    प्रश्न संख्या 115: In the Michaelis-Menten mechanism for enzyme kinetics, the expression obtained is:
88. The most used acid catalyst in oil industry and the relevant process are respectively CSIR NET June 2012 | Q116 | Industrial Catalysis / Zeolite Aluminosilicate Acid Catalysts
    प्रश्न संख्या 116: The most used acid catalyst in oil industry and the relevant process are respectively
89. The wavelength and the spectral region for a single electron transfer across the band gap in a semi- CSIR NET June 2012 | Q117 | Solid State / Semiconductor Bandgap Optical Threshold Wavelength
    प्रश्न संख्या 117: The wavelength and the spectral region for a single electron transfer across the band gap in a semi-
90. The lattice parameter of an element stabilized in a fcc structure is 4.04 Å. The atomic radius of the CSIR NET June 2012 | Q118 | Solid State / Relation between Lattice Parameter and Atomic Radius in FCC
    प्रश्न संख्या 118: The lattice parameter of an element stabilized in a fcc structure is 4.04 Å. The atomic radius of the
91. The number-average molar mass ( M n) and weight-average molar mass ( M w) of a polymer are CSIR NET June 2012 | Q119 | Polymer Chemistry / Experimental Determination of M_n and M_w
    प्रश्न संख्या 119: The number-average molar mass ( M n) and weight-average molar mass ( M w) of a polymer are
92. Two data sets involving the same variables X and Y are given below CSIR NET June 2012 | Q120 | Data Analysis / Comparison of Regression Slopes and Intercepts
    प्रश्न संख्या 120: Two data sets involving the same variables X and Y are given below
93. Compounds A and B exhibit two singlets, each in their 1H NMR spectra. The expected chemical CSIR NET June 2012 | Q121 | Organic Spectroscopy / 1H NMR Chemical Shifts of Acetoxy Enones
    प्रश्न संख्या 121: Compounds A and B exhibit two singlets, each in their 1H NMR spectra. The expected chemical
94. 1 CSIR NET June 2012 | Q122 | Carbohydrate Chemistry / Neighboring Group Participation in Glycosylation
    प्रश्न संख्या 122: 1
95. In the following reaction sequence, the major products A and B are CSIR NET June 2012 | Q22 | Periodic Properties / Radial Size of d-Orbitals in Period 3
    प्रश्न संख्या 22: In the following reaction sequence, the major products A and B are
96. The structure of the tricyclic compound formed in the following two step sequence is CSIR NET June 2012 | Q123 | Heterocyclic Chemistry / NBS Allylic Bromination & Cyclization
    प्रश्न संख्या 123: The structure of the tricyclic compound formed in the following two step sequence is
97. The two step conversion of 7-dehydrocholesterol to vitamin D3 proceeds through CSIR NET June 2012 | Q124 | Pericyclic Reactions / Photochemical Ring Opening in Vitamin D3 Synthesis
    प्रश्न संख्या 124: The two step conversion of 7-dehydrocholesterol to vitamin D3 proceeds through
98. 1 CSIR NET June 2012 | Q125 | Organic Rearrangements / Curtius Rearrangement Mechanism & Intermediates
    प्रश्न संख्या 125: 1
99. The intermediate A and the major product B in the following reaction are CSIR NET June 2012 | Q25 | Mossbauer Spectroscopy / Magnetic Hyperfine Splitting of Fe(CO)5
    प्रश्न संख्या 25: The intermediate A and the major product B in the following reaction are
100. For the following two reactions A and B, the correct statement is: CSIR NET June 2012 | Q126 | Organic Reactions / Regioselective Dehydrohalogenation with Potassium t-Butoxide
     प्रश्न संख्या 126: For the following two reactions A and B, the correct statement is:
101. 1 CSIR NET June 2012 | Q127 | Organic Synthesis / Hydroboration-Oxidation followed by Intramolecular Lactonization
     प्रश्न संख्या 127: 1
102. The major compound B formed in the reaction sequence given below exhibited a carbonyl ab- CSIR NET June 2012 | Q27 | Nuclear Chemistry / Carbon-14 Dating Beta Emission
     प्रश्न संख्या 27: The major compound B formed in the reaction sequence given below exhibited a carbonyl ab-
103. Consider the following reaction sequence starting with monoterpene α- pinene . Identify the cor- CSIR NET June 2012 | Q128 | Natural Products / Terpenoid Oxidation of Alpha-Pinene
     प्रश्न संख्या 128: Consider the following reaction sequence starting with monoterpene α- pinene . Identify the cor-
104. The major product formed when (3R, 4S)-3, 4-dimethylhexa-1, 5-diene is heated at 240º is: CSIR NET June 2012 | Q129 | Pericyclic Reactions / Cope Rearrangement Stereochemistry
     प्रश्न संख्या 129: The major product formed when (3R, 4S)-3, 4-dimethylhexa-1, 5-diene is heated at 240º is:
105. Structure of the starting material A in the following photochemical Norrish reaction, is CSIR NET June 2012 | Q130 | Photochemistry / Norrish Type I Cleavage in Cyclic Ketones
     प्रश्न संख्या 130: Structure of the starting material A in the following photochemical Norrish reaction, is
106. 1 CSIR NET June 2012 | Q131 | Stereoselective Synthesis / Felkin-Anh Model & Diastereoselective Reduction
     प्रश्न संख्या 131: 1
107. Considering the following reaction, among A-C, the correct statements are CSIR NET June 2012 | Q31 | Coordination Chemistry / Chloride Ligand Donor Properties
     प्रश्न संख्या 31: Considering the following reaction, among A-C, the correct statements are
108. 1 CSIR NET June 2012 | Q132 | Organic Synthesis / Epoxidation and Lewis Acid Rearrangement
     प्रश्न संख्या 132: 1
109. The major product formed in the following reaction sequence is CSIR NET June 2012 | Q32 | Coordination Chemistry / Spin-Orbit Coupling in Octahedral Complexes
     प्रश्न संख्या 32: The major product formed in the following reaction sequence is
110. 1 CSIR NET June 2012 | Q133 | Organic Synthesis / Selective Lactone Reduction by DIBAL-H
     प्रश्न संख्या 133: 1
111. The major product formed in the following reaction sequence is: CSIR NET June 2012 | Q33 | Organometallics / Aggregation & Nucleophilicity of Alkyl Lithium
     प्रश्न संख्या 33: The major product formed in the following reaction sequence is:
112. Match the following CSIR NET June 2012 | Q134 | Organic Spectroscopy / 13C NMR Chemical Shift Ranges of Functional Groups
     प्रश्न संख्या 134: Match the following
113. The major products A and B in the following reaction sequence are CSIR NET June 2012 | Q135 | Organic Synthesis / Mitsunobu Reaction and Radical Cyclization
     प्रश्न संख्या 135: The major products A and B in the following reaction sequence are
114. 1 CSIR NET June 2012 | Q136 | Name Reactions / Favorskii Rearrangement of Alpha-Halocyclohexanones
     प्रश्न संख्या 136: 1
115. The major product formed in the following reaction is: CSIR NET June 2012 | Q36 | Inorganic Chemistry / Relative Oxidizing Strengths of Oxoanions
     प्रश्न संख्या 36: The major product formed in the following reaction is:
116. The reagents A and B in the following reactions are CSIR NET June 2012 | Q137 | Organic Reagents / Simmons-Smith vs Corey-Chaykovsky Epoxidation
     प्रश्न संख्या 137: The reagents A and B in the following reactions are
117. The major products A and B formed in the following reaction sequence are CSIR NET June 2012 | Q138 | Asymmetric Synthesis / Sharpless Asymmetric Epoxidation of Allylic Alcohols
     प्रश्न संख्या 138: The major products A and B formed in the following reaction sequence are
118. The major products A and B formed in the following reaction sequence are CSIR NET June 2012 | Q139 | Organometallic Coupling / Hydroboration followed by Suzuki-Miyaura Coupling
     प्रश्न संख्या 139: The major products A and B formed in the following reaction sequence are
119. The correct reagent combination/reaction sequence for effecting the following conversion is: CSIR NET June 2012 | Q140 | Organic Synthesis / Shapiro Reaction & Enolate Functionalization
     प्रश्न संख्या 140: The correct reagent combination/reaction sequence for effecting the following conversion is:
120. (a) (b) (c) (d) The (1) (1) (1) (1) major NHMeNHPh33P22product SiCHNHTs; NHTs; +CH22MeCl, OMe, (2) (2) formed NaOEt; 2 BuLi; (2) BuLi; (2) (3) eq. BuLi; in the HHClCOOEt 33OO++; ; (3) (3) (3) HCHO following NaBHNaBH44, , reaction MeOH MeOH CSIR NET June 2012 | Q141 | Organometallics / Conjugate Addition of Gilman Reagent (Me2CuLi)
     प्रश्न संख्या 141: (a) (b) (c) (d) The (1) (1) (1) (1) major NHMeNHPh33P22product SiCHNHTs; NHTs; +CH22MeCl, OMe, (2) (2) formed NaOEt; 2 BuLi; (2) BuLi; (2) (3) eq. BuLi; in the HHClCOOEt 33OO++; ; (3) (3) (3) HCHO following NaBHNaBH44, , reaction MeOH MeOH
121. 1 CSIR NET June 2012 | Q142 | Organic Synthesis / Multistep Heterocycle Protection and Annulation
     प्रश्न संख्या 142: 1
122. The correct sequence of reagents for effecting the following conversion is: CSIR NET June 2012 | Q42 | Molecular Spectroscopy / Rotational Transitions in Rigid Rotors
     प्रश्न संख्या 42: The correct sequence of reagents for effecting the following conversion is:
123. The major products A and B formed in the following reaction sequence are CSIR NET June 2012 | Q143 | Heterocyclic Chemistry / Bischler-Napieralski Isoquinoline Synthesis
     प्रश्न संख्या 143: The major products A and B formed in the following reaction sequence are
124. The reagent A required, and the major product B formed in the following reaction sequence are CSIR NET June 2012 | Q144 | Organic Reactions / Dibromocarbene Addition & Silver-Assisted Ring Expansion
     प्रश्न संख्या 144: The reagent A required, and the major product B formed in the following reaction sequence are
125. Among the choices, the correct statements for A formed in the following reaction. CSIR NET June 2012 | Q145 | Stereoselective Synthesis / Asymmetric Enamine Catalysis & Enantiomeric Purity
     प्रश्न संख्या 145: Among the choices, the correct statements for A formed in the following reaction.