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. Q4 — Uranium fluorides co-precipitate with · Lanthanides Actinides
4. Q5 — The oxidative addition and reductive elimination steps are favoured by · Organometallic Compounds
5. Q7 — Oxidation occurs very easily in case of · Organometallic Compounds
6. Q8 — Complex in which organic ligand is having only σ-bond with metal is: · Organometallic Compounds
7. Q11 — In the most stable conformation of trans-1-t-butyl-3-methylcyclohexane, the substituents at C-1 and C-3 · General Organic Chemistry
8. Q23 — The concerted photochemical reaction between two olefins leading to a cyclobutane ring is: · Pericyclic Reactions
9. Q25 — The concerted photochemical reaction between two olefins leading to a cyclobutane ring is: · Photochemical Reactions
10. 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
11. Q36 — For an aqueous solution at 25°C, the Debye-Huckel limiting law is given by · Electrochemistry
12. Q40 — The microwave spectrum of a molecule yields three rotational constants. The molecule is · Molecular Spectroscopy
13. 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
14. Q64 — According To Crystal Field Theory, Ni²⁺ can two have unpaired electrons in · Coordination Chemistry
15. Q72 — Cis and trans complexes of the type [PtA² X²] are distinguished by · Coordination Chemistry
16. Q89 — The absorption at λmax =279 nm(ε=15) in the UV spectrum of acetone is due to · Organic Spectroscopy
17. Q91 — In the mass spectrum of dichlorobenzene the ratio of the peaks at m / z 146, 148 and 150, is: · Organic Spectroscopy
18. 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
19. Q105 — If the specific conductances of a sparingly soluble (1:1) salt (MW =200 g mol⁻¹) in its saturated aqueous · Electrochemistry
20. Q109 — Refer to the character table of the point group C3 V given above. Find which of the following transition is · Group Theory
21. Q111 — Among the following, the CORRECT statement is: · Group Theory
22. Q115 — The number of IR active vibrational modes of pyridine is: · Group Theory
23. Q120 — The symmetry point group of propyne is · Group Theory
24. Q121 — Number of rotational symmetry axes for triclinic crystal system is · Group Theory
25. Q122 — The E × E direct product in D₃ point group contains the irreducible representations · Group Theory
26. Q123 — The result of the product C₂(x) C₂(y) is · Group Theory
27. Q124 — A molecule, AX, has a vibrational energy of 1000 cm⁻¹ and rotational energy of 10 cm⁻¹. Another molecule, BX · Molecular Spectroscopy
28. Q125 — At room temperature, which molecule has the maximum rotational entropy? · Molecular Spectroscopy
29. Q126 — The Q band in the vibrational spectrum of acetylene is observed in the · Molecular Spectroscopy
30. 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
31. Q129 — The uncertainty in the NMR frequency of a compound in liquid state (relaxation time =1 s) is 0.1 Hz. The · Molecular Spectroscopy
32. Q132 — Saturation factor in neutron activation analysis is (A= induced radioactivity, ψ= neutron flux, σ= effective · Nuclear Chemistry
33. Q133 — The penetrating power (R) and ionizing power (I) of α, β, and γ rays follow the ordering · Nuclear Chemistry
34. Q134 — The reactive cross section is expected to be the largest for the reaction · Nuclear Chemistry
35. Q136 — There are several types of mean molar masses for polymer and they are dependent on experimental methods like · Polymer Chemistry
36. 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
37. 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
38. Q145 — A one-dimensional crystal of lattice dimension 'a' is metallic. If the structure is distorted in such a way · Solid State Chemistry
39. Q147 — The term symbol for the ground state of nitrogen atoms is · Statistical Thermodynamics
40. Q150 — A process is carried out at constant volume and at constant entropy. It will be spontaneous if: · Thermodynamics
41. Q151 — The chemical potential of component 1 in a solution of binary mixture is μ₁=μ₁⁰+RT ln p₁, when p₁ is the · Thermodynamics

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