4AB › Chemistry PYQ › CSIR NET › June 2017

1. Q1 — The compound that gives a basic solution in HF is : · Acid and Bases
2. Q4 — Among the following, the natural product that is a steroid and contains an α, β-unsaturated ketone is · Natural Products
3. Q6 — ¹³ C NMR spectrum of DMSO- d₆ gives a signal at δ 39.7 ppm as a · Organic Spectroscopy
4. Q14 — A solution of Fe³⁺ is titrated potentiometrically using Ce³⁺ solution at 25 °C. The emf (in V) of the redox · Electrochemistry
5. Q15 — The standard cell potential of cell, Pt | H₂(g) | HBr(aq) | AgBr(s) | Ag(s), was measured over a range of · Electrochemistry
6. Q17 — For a certain magnetic field strength, a free proton spin transition occurs at 700 MHz. Keeping the magnetic · Molecular Spectroscopy
7. Q18 — The correct statement for any cyclic thermodynamic process is · Thermodynamics
8. Q30 — Mössbauer spectrum of complex [Fe(1,10-phenanthroline)₂(NCS)₂] shows two lines at 300 K, four lines at 186 K · Inorganic Spectroscopy
9. Q39 — Consider following statements for fission of U²³⁵ with thermal neutrons. A. The% of nuclei undergoing · Nuclear Chemistry
10. Q52 — If the pre-exponential factor in Arrhenius equation is 1.6 × 10¹² s⁻¹, the value of the rate constant at · Chemical Kinetics
11. Q53 — In kinetic study of a chemical reaction, slopes are drawn at different times in the plot of concentration of · Chemical Kinetics
12. Q54 — Photochemical decomposition of HI takes place with the following mechanism HI+hv (Ia) → H+I H+HI k₁ H₂+I · Chemical Kinetics
13. Q55 — In a enzyme catalyzed reaction: E+S k₋₁k₁⇌ ES k₂ E+P k₂=3.42 × 10⁴ s⁻¹. If [E]₀=1.0 × 10⁻² mol dm⁻³, the · Chemical Kinetics
14. Q56 — Arrhenius equations for two chemical reactions are: k₁=A₁ e-E₁ / RT, k₂=A₂ e-E₂ / RT. If E₁>E₂ then at a · Chemical Kinetics
15. Q57 — The electrochemical cell potential (E), after the reactants and products reach equilibrium, is (E⁰. is the · Electrochemistry
16. Q58 — The specific conductance of a solution is 0.176 Ω⁻¹ cm⁻¹. If the cell constant is 0.255 cm⁻¹, the conductance · Electrochemistry
17. Q59 — The standard cell potential for the reaction Zn(s)+Cu²⁺(aq) ⇔ Zn²⁺(aq)+Cu(s) is +1.10 V. The Gibbs free · Electrochemistry
18. Q60 — A solution of Fe³⁺ is titrated potentiometrically using Ce³⁺ solution at 25°C. The emf (in V) of the redox · Electrochemistry
19. Q61 — The standard cell potential of cell, Pt |H₂(g) | HBr(aq)|AgBr(s)| Ag(s), was measured over a range of · Electrochemistry
20. Q62 — The correct relation involving symmetry operations · Group Theory
21. Q65 — For a certain magnetic field strength, a free proton spin transition occurs at 700 MHz. Keeping the magnetic · Molecular Spectroscopy
22. Q66 — The first electronic absorption band maximum of a polar and relatively rigid aromatic molecule appears at 310 · Molecular Spectroscopy
23. Q67 — For a monodisperse polymer, the number-average molar mass (MN) and weight-average molar mass (Mw) are related · Polymer Chemistry
24. Q68 — A polydisperse polymer sample has ten molecules of molar mass 20,000 g mol⁻¹ and fifteen molecules of molar · Polymer Chemistry
25. Q69 — Metallic silver crystallizes in face-centred-cubic lattice structure with a unit cell of length 40 nm. The · Solid State Chemistry
26. Q70 — Polonium is the only metal known to exist in a simple cubic lattice form. The density of polonium at 0°C is · Solid State Chemistry
27. Q72 — The first excited state (² P1 / 2) of fluorine lies at an energy of 400 cm⁻¹ above the ground state (² P3 / · Statistical Thermodynamics
28. Q73 — An intense purple colour (Plasmon band) is exhibited by a colloid consisting of spherical · Surface Chemistry
29. Q76 — A phase transition process is always · Thermodynamics
30. Q77 — The correct statement for any cyclic thermodynamic process is · Thermodynamics
31. Q78 — The fugacity of a real gas is less than the pressure (P) of an ideal gas at the same temperature (T) only · Thermodynamics
32. Q79 — The minimum work required by an engine to transfer 5 J of heat from a reservoir at 100 K to one at 300 K is · Thermodynamics

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