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Chemistry PYQ

CSIR NET Chemistry December 2017 — 59 questions

Chemical Sciences, December 2017: every question we hold for this paper, with options, the answer where the source gives one, and an explanation where available.

  1. Q1 — The reactions given below, A Cl₂ + H₂O → HOCl + H₃O⁺ + Cl⁻ B Cl₂ + 2NH₃ → NH₂Cl + NH₄ + Cl⁻ are examples of · Acids and Bases
  2. Q3 — Among ClO₃, XeO₃ and SO₃, species with pyramidal shape is/are? · Chemical Bonding
  3. Q4 — Geometries of SNF₃ and XeF₂O₂ respectively, are · Chemical Bonding
  4. Q5 — The number of lines in EPR spectrum of CD₃ (ID = 1) is · Inorganic Spectroscopy
  5. Q7 — The correct order of stability of the following carbocations is (A) (B) (C) · General Organic Chemistry
  6. Q8 — The number of optically active steroisomers possible for CH₃-CH(OH)-CH(OH)-CH(OH)-CH₃ is · General Organic Chemistry
  7. Q9 — The following natural product Enterodiol is a · Natural Products
  8. Q10 — The structure of ribonucleoside uridine is · Natural Products
  9. Q17 — Correct sequence of steps involved in the following transformation is · Reagents, Reaction Mechanisms & Named Reactions
  10. Q20 — The slope and intercept obtained from (1/Rate) against (1/substrate concentration) of an enzyme catalyzed · Chemical Kinetics
  11. Q21 — Repeated measurement of Pb in a lake water sample gave 3.2, 5.2 and 7.2 ppb of Pb. Standard deviation in the · Data Analysis
  12. Q22 — Four distinguishable molecules are distributed in energy level E1 and E2 with degeneracy of 2 & 3 · Statistical Thermodynamics
  13. Q23 — Enthalpy is equal to · Thermodynamics
  14. Q24 — To determine the bond parameters at 25°C, electron diffraction is generally unsuitable for both · Analytical Chemistry
  15. Q26 — The peak area of differential thermal analysis curve is proportional to one or more of the following A. mass · Analytical Chemistry
  16. Q27 — The correct statement for cytochrome c is · Bioinorganic Chemistry
  17. Q29 — The number of inorganic sulfides in cubane like ferredoxin and their removal method, respectively, are · Bioinorganic Chemistry
  18. Q30 — Among ClO₃, XeO₃ and SO₃, species with pyramidal shape is/are? · Chemical Bonding
  19. Q31 — According to Bent's rule, for p-block elements, the correct combination of geometry around the central atom · Chemical Bonding
  20. Q32 — Allred-Rochow electronegativity of an element is A. directly proportional to the effective nuclear charge B · Chemical Bonding
  21. Q33 — For the following complexes, the increasing order of magnetic moment (spin only value) is A. [TiF₆]⁻³ B · Coordination Chemistry
  22. Q34 — The geometry around Cu and its spin state for K₃CuF₆ and KCuL₂, [H₂L=H₂NCONHCONH₂], respectively are: · Coordination Chemistry
  23. Q35 — Consider the following statements with respect to the base hydrolysis of [CoCl (NH₃)₅] to [Co (NH₃)₅(OH)]²⁺ · Coordination Chemistry
  24. Q37 — For high spin and low spin d⁶ octahedral complexes (ML₆), the generally observed spin allowed transitions · Coordination Chemistry
  25. Q38 — Br₂ with propanone forms a charge transfer complex and I₂ forms triiodide anion with I⁻. This implies that · Coordination Chemistry
  26. Q40 — Assuming ¹JPH > JPB the expected ³¹P NMR spectrum of H₃P.¹¹BCl₃ [for ¹¹B, I = 3/2] is · Inorganic Spectroscopy
  27. Q41 — The number of lines in EPR spectrum of CD₃ (ID=1) is · Inorganic Spectroscopy
  28. Q43 — Consider the following statements for [FeO₄]²⁻ (A) It is stable in the pH range 0-14 (B) It is stable in · Inorganic Spectroscopy
  29. Q44 — Match lanthanides in Column I with their properties in Column II Correct match is · Lanthanides and Actinides
  30. Q45 — Consider the following statement(s) for actinides (An): A. Oxidation states greater than +3 are more frequent · Lanthanides and Actinides
  31. Q46 — The first ionization energy is the lowest for · Main Group Elements
  32. Q47 — Choose the incorrect statement for the phosphomolybdate anion [PMo₁₂O₄₀]³⁻ · Main Group Elements
  33. Q48 — Among the following nuclear reactions of thermal neutrons, the cross section is highest for: · Nuclear Chemistry
  34. Q49 — In trigonal prismatic ligand field, the most stabilized d orbital is · Organometallic Compounds
  35. Q50 — Among the following species isolobal to CH₂ are A. CpCr(CO)₂ B. CpCu C. Ni(CO)₂ D. Cr(CO)₄ E. Fe(CO)₄ · Organometallic Compounds
  36. Q51 — In the complex [Pd(L-L)(Me)(Ph)], the bisphosphine (L-L) that does not allow reductive elimination of PhMe is · Organometallic Compounds
  37. Q52 — According to Wade's rules, the cluster type and geometry of [Sn₉]⁴⁻, respectively, are · Organometallic Compounds
  38. Q55 — The following reaction involves Rh₂(OAC)₄ (cat.) · Pericyclic Reactions
  39. Q56 — In the following transformation, the mode of electrocyclization A and the major product B are heat B · Pericyclic Reactions
  40. Q57 — For a sequence of consecutive reactions, A k₁ I k₂ P, the concentration of I would be, by steady state · Chemical Kinetics
  41. Q58 — Reaction between A and B is carried out for different initial concentrations and the corresponding half-life · Chemical Kinetics
  42. Q59 — Repeated measurement of Pb in a lake water sample gave 3.2, 5.2 and 7.2 ppb of Pb. Standard deviation in the · Data Analysis
  43. Q60 — The correct statement among the following is · Electrochemistry
  44. Q61 — The standard free energy of the reaction AgBr(s) → Ag⁺(aq) + Br⁻(aq) Is closest to. [E°(AgBr/Ag,Br⁻) = 0.07 · Electrochemistry
  45. Q62 — Conductivities of water and a saturated solution of a sparingly soluble salt AB₂ are 7 and 21 μ S m⁻¹ · Electrochemistry
  46. Q63 — The correct relation involving symmetry operations · Group Theory
  47. Q64 — For a point group, an incomplete character table is given below with one irreducible representation missing · Group Theory
  48. Q66 — The molecule with a C₂ axis of symmetry among the following is · Group Theory
  49. Q71 — The molecule that will show Raman spectrum, but not IR spectrum, among the following is · Molecular Spectroscopy
  50. Q73 — The pair that contains a spherical top and a symmetric top, among the following, is · Molecular Spectroscopy
  51. Q74 — The g-factors of ¹H and ¹³C are 5.6 and 1.4 respectively. For the same value of the magnetic field strength · Molecular Spectroscopy
  52. Q75 — A polymer has the following molar mass distribution The calculated number average molar mass (Mn) of the · Polymer Chemistry
  53. Q77 — The separation of the (123) planes of an orthorhombic unit cell is 3.12 nm. The separation of (246) and (369) · Solid State Chemistry
  54. Q78 — If all the lattice points of an FCC structure are occupied by uniform hard spheres that touch each other, the · Solid State Chemistry
  55. Q79 — The (002) plane of an elemental FCC crystal diffracts X-rays (λ = 0.154 nm) at Bragg angle 90°. the density · Solid State Chemistry
  56. Q80 — The term symbol for the ground state of a metal ion is ³P₂. The residual entropy of a crystal of a salt of · Statistical Thermodynamics
  57. Q81 — Four distinguishable molecules are distributed in energy level E₁ and E₂ with degeneracy of 2 & 3 · Statistical Thermodynamics
  58. Q82 — Enthalpy is equal to · Thermodynamics
  59. Q83 — In stretching of a rubber band, dG=Vdp-SdT+fdL. Which of the following relations in true? · Thermodynamics

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