4AB › Chemistry PYQ › CSIR NET › June 2018

1. Q1 — Dinuclear anion [I₂(OH)₂O₈]⁴⁻ has two bridging oxo groups. The geometry around each iodine is- · Chemical Bonding
2. Q2 — For the following compounds, the correct order of reactivity towards nucleophilic acyl substitution is · General Organic Chemistry
3. Q4 — IUPAC nomenclature of the following propellane is · General Organic Chemistry
4. Q5 — The correct order of rate of solvolysis in 80% ethanol at 25 °C is A B C · General Organic Chemistry
5. Q9 — The reaction of [(η⁵-C₅H₅)Fe(CO)₂] with CH₃I gives compound A. The ¹H NMR spectrum of A shows two singlets in · Organic Spectroscopy
6. Q10 — The correct match of protons in column A with the ¹H NMR chemical shifts in column B for the product of the · Organic Spectroscopy
7. Q12 — Mechanism of the following transformation involves + · Pericyclic Reactions
8. Q14 — The major products formed in the following photochemical reaction are [CCl₄]hν · Photochemical Reactions
9. Q17 — The major heterocyclic compound formed in the following reaction is 2. H₂, Pd/C, MeOH · Reagents, Reaction Mechanisms & Named Reactions
10. Q19 — For an enzyme-substrate reaction, E+S k₋₁k₁⇌ ES, ES k₂ E+P, the slope and intercept of plot between 1/r and · Chemical Kinetics
11. Q20 — The change in entropy for a reversible adiabatic process is · Thermodynamics
12. Q21 — In the phase diagram of water, the solid-liquidboundary has a negative slope. The reason for this unusual · Thermodynamics
13. Q22 — At 300K, the thermal expansion coefficient and isothermal compressibility of liquid water are 2 × 10⁻⁴ K⁻¹ · Thermodynamics
14. Q23 — The transformation are given in Column 1 and reagent in Column II. Match the items of Column I with those of · Acids and Bases
15. Q24 — Height equivalent to theoretical plate (HETP) in gas liquid chromatography depends Significantly on which of · Analytical Chemistry
16. Q25 — For the catalytic activity of Cu and Zn containing enzyme, superoxide dismutase. What is /are the correct · Bioinorganic Chemistry
17. Q26 — Consider the following statements for the oxygenation of hemocyanine: (A) Oxidation state of both copper · Bioinorganic Chemistry
18. Q27 — Choose the correct set of statements for cis-platin. (A) It can be prepared from K₂[PtCl₄]. (B) It can be · Bioinorganic Chemistry
19. Q28 — Dinuclear anion [I₂(OH)₂ O₈]⁴⁻ has two bridging oxo groups. The geometry around each iodine is · Chemical Bonding
20. Q29 — Removal of an electron form NO molecule results in A. An increase in the (NO) in the IR spectrum B. An EPR · Chemical Bonding
21. Q32 — The total degeneracy of the ground term of CoII (high spin) in octahedral geometry is · Coordination Chemistry
22. Q33 — High spin complex of a 3d metal ion M has a magnetic moment of 2.9 B.M. in octahedral coordination · Coordination Chemistry
23. Q34 — For electronic spectra of K₂ CrO₄(A) and K₂ MoO₄(B) the correct combination is · Coordination Chemistry
24. Q35 — The lowest energy state of a 1s¹2s¹ electronic configuration, according to hund's rule, is · Coordination Chemistry
25. Q36 — Consider the following statements: (A) Cr²⁺ is easier to oxidize than V²⁺ in the gas phase (B) Cr²⁺ (aq) is a · Coordination Chemistry
26. Q37 — Consider the statements A - D regarding equation I-III: (I) [Fe(CN)₆]³⁻+ [Co(CN)₅]³⁻ → [Fe(CN)₆]⁴⁻+ · Coordination Chemistry
27. Q38 — The allowed electronic transition in fluorine molecule is · Coordination Chemistry
28. Q39 — Trivalent lanthanide ion having isotropic magnetic susceptibility is · Lanthanides and Actinides
29. Q40 — Match fluorescence colours given in column A with lanthanide ions given in Column B Correct match is · Lanthanides and Actinides
30. Q41 — The structure of CaB₆ is close to that of · Main Group Elements
31. Q42 — Among the elements Zn, Ga, Ge as As, the one with the lowest first ionization energy is - · Main Group Elements
32. Q43 — A binary fluoride (Z) of xenon combines with two moles of NaF to give a product which on hearting to 100° C · Main Group Elements
33. Q45 — Consider the following statements for Be₂Cl₄ (I), B₂Cl₄ (II) and Ga₂Cl₄ (III): (A) There is an M-M (M = Be · Main Group Elements
34. Q46 — The correct of C-O bond length is · Organometallic Compounds
35. Q48 — The correct increasing order of C-C bond length in the following molecules (A-D) [PtCl₃ (C₂ H₄)]⁻(A), [Pt · Organometallic Compounds
36. Q49 — Which of the following are NOT closo clusters? [ {Co(η⁵-C₅H₅)}₂(C₂B₆H₈)](A) [B₄C₂H₈](B) [B₁₀H₁₃{Au(PPh₃)}](C) · Organometallic Compounds
37. Q50 — Identify the pair of molecules which are isoelecronic as well as isostructural from the following [Pd · Organometallic Compounds
38. Q52 — The reaction of [(η⁵-C₅H₅ (Fe(CO)₂)]⁻ with CH₃I gives compound A. The ¹H NMR spectrum of A show two singlets · Organometallic Compounds
39. Q53 — The structures of [Re₂ Cl₈]²⁻(A) and [Os₂ Cl₈]²⁻(B) are made up of two MCl₄ units. For these structure which · Organometallic Compounds
40. Q55 — Using a double beam UV-visible spectrophotometer, Beer's law fails for K₂Cr₂O₇ solution when · Organic Spectroscopy
41. Q59 — For the following thermal [2+2] cycloaddition reaction, the correct statement about Transition State (TS) and · Pericyclic Reactions
42. Q61 — Elementary steps of a reaction are as follows A + B k₋₁k₁⇌ 2C; 2C k₂ D If steady state approximation is · Chemical Kinetics
43. Q62 — For an enzyme-substrate reaction, E+S k₋₁k₁⇌ ES the slope and intercept of plot between 1 / r and 1 /[S] are · Chemical Kinetics
44. Q63 — Difference between activation energies of the reverse and forward steps of a reversible reaction is 9.212 RT · Chemical Kinetics
45. Q64 — For a second-order reaction, the straight line among the following plots is · Chemical Kinetics
46. Q65 — A Gaussian distribution has the functional form f(x)=22 a² π e-(x-b)² / 2 a². The variance of such · Data Analysis
47. Q66 — The equilibrium constant of the following reaction: Sn(s)+Sn⁴⁺(aq) ⇔ 2 Sn²⁺(aq) At 300 K is closest to · Electrochemistry
48. Q68 — A symmetric top molecule, among the following, is · Molecular Spectroscopy
49. Q71 — If all the lattice points of an FCC structure are occupied by uniform hard spheres that touch each other, the · Solid State Chemistry
50. Q72 — The (002) plane of an elemental FCC crystal diffracts X-rays (λ = 0.154 nm) at Bragg angle 90°. the density · Solid State Chemistry
51. Q74 — The change in entropy for a reversible adiabatic process is · Thermodynamics
52. Q78 — In fission of ²³⁵ U atom the energy released is 200 MeV. In one day fission of 1 kg²³⁵ U will give power (in · Surface Chemistry
53. Q79 — Number of signals observed in the ¹³C NMR spectrum of the following compound is · Organic Spectroscopy

← December 2017 · December 2018 → · All CSIR NET papers